Fix name clash with libcap 2.29.

Taken from upstream:
https://github.com/iputils/iputils/commit/18f9a84e0e702841d6cc4d5f593de4fbd1348e83

diff --git a/ninfod/ninfod.c b/ninfod/ninfod.c
--- a/ninfod/ninfod.c
+++ b/ninfod/ninfod.c
@@ -455,7 +455,7 @@ static void do_daemonize(void)
 /* --------- */
 #ifdef HAVE_LIBCAP
 static const cap_value_t cap_net_raw = CAP_NET_RAW;
-static const cap_value_t cap_setuid =  CAP_SETUID; 
+static const cap_value_t cap_setuserid = CAP_SETUID;
 static cap_flag_value_t cap_ok;
 #else
 static uid_t euid;
@@ -487,7 +487,7 @@ static void limit_capabilities(void)
 
 	cap_get_flag(cap_cur_p, CAP_SETUID, CAP_PERMITTED, &cap_ok);
 	if (cap_ok != CAP_CLEAR)
-		cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_setuid, CAP_SET);
+		cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_setuserid, CAP_SET);
 
 	if (cap_set_proc(cap_p) < 0) {
 		DEBUG(LOG_ERR, "cap_set_proc: %s\n", strerror(errno));
@@ -520,8 +520,8 @@ static void drop_capabilities(void)
 
 	/* setuid / setuid */
 	if (cap_ok != CAP_CLEAR) {
-		cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_setuid, CAP_SET);
-		cap_set_flag(cap_p, CAP_EFFECTIVE, 1, &cap_setuid, CAP_SET);
+		cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_setuserid, CAP_SET);
+		cap_set_flag(cap_p, CAP_EFFECTIVE, 1, &cap_setuserid, CAP_SET);
 
 		if (cap_set_proc(cap_p) < 0) {
 			DEBUG(LOG_ERR, "cap_set_proc: %s\n", strerror(errno));
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<tr><td><span title='2023-05-07 09:18:08 +0100'>2023-05-07</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=b1e9ae7f0e72bc3c8c7ab28362315fac5dfb65fe'>gnu: icu4c-70: Fix gexp in builder script for riscv64.</a><span class='msg-avail'>...<span class='msg-tooltip'>As phases from icu4c is a gexp.

* gnu/packages/icu4c.scm (icu4c-70)[arguments]: Use gexps.
</span></span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2022-09-27 15:59:30 -0400'>2022-09-27</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=990a4822f1cb45c1470fe38cbf17fd7bb54d0088'>Merge branch 'staging' into core-updates</a><span class='msg-avail'>...<span class='msg-tooltip'>Conflicts resolved in:
	gnu/local.mk
	gnu/packages/cran.scm
	gnu/packages/gnome.scm
	gnu/packages/gtk.scm
	gnu/packages/icu4c.scm
	gnu/packages/java.scm
	gnu/packages/machine-learning.scm
	gnu/packages/tex.scm
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-09-24 21:16:12 +0300'>2022-09-24</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=445076743e13a424c40622b1f70f4257128108b9'>gnu: Remove icu4c-67.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/icu4c.scm (icu4c-67): Remove variable.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-07-22 01:09:14 +0200'>2022-07-22</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=9044b086ddca64a62966a83cbf1b82d32dece89e'>Merge branch 'staging' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-07-16 23:25:19 +0200'>2022-07-16</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=7f781c04343c4917e7dc9752018e91855117f53e'>gnu: mozjs: Build with ICU 69.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/icu4c.scm (icu4c-69): New variable.
* gnu/packages/gnuzilla.scm (mozjs)[inputs]: Change from ICU4C to ICU4C-69.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-07-11 16:18:12 +0300'>2022-07-11</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=e0e87fe3a62d308f00dfada08c83c64ba70419e5'>gnu: icu4c-70: Fix building on riscv64-linux.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/icu4c.scm (icu4c-70)[arguments]: When building for
riscv64-linux replace the custom 'disable-failing-test phase to skip an
additional test.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-06-30 23:26:17 +0200'>2022-06-30</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=1861b35e36dbc3f9bc2ba047d0602665138c03ed'>gnu: icu4c: Remove input labels.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/icu4c.scm (icu4c)[arguments]: Use G-expression.
[native-inputs]: Remove labels.
* gnu/packages/icu4c.scm (icu4c-build-root)[arguments]: Use gexp.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-06-27 23:48:00 +0200'>2022-06-27</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=20bc806b044057d657e8ba6d10b6515bd1b702d4'>gnu: icu4c: Update to 71.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/icu4c.scm (icu4c): Update to 71.1.
(icu4c-71): Remove variable.
* gnu/packages/chromium.scm (ungoogled-chromium)[inputs]: Change ICU4C-71 to
ICU4C.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-06-23 15:49:59 +0200'>2022-06-23</span></td><td><a href='/guix/commit/gnu/packages/icu4c.scm?id=aa3e99042401f3ffd2df1e92b11afaea8ac63575'>gnu: icu4c: Add 71.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/icu4c.scm (icu4c-71): New variable.
</span></span></td><td>Marius Bakke</td></tr>