Fix build failure caused by erroneous use of an undeclared symbol.

Patch copied from upstream bug report:
https://rt.cpan.org/Public/Bug/Display.html?id=117793

From 0be0223422e6e5f4091c6e4e058d213623eed105 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
Date: Mon, 12 Sep 2016 14:40:44 +0200
Subject: [PATCH] Skip preprocessor symbol only CURL_STRICTER
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

CURL_STRICTER leaked into curl-constants.c when building against
curl-7.50.2. This is a preprocessor only macro without a value.

CPAN RT#117793

Signed-off-by: Petr Písař <ppisar@redhat.com>
---
 Makefile.PL | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.PL b/Makefile.PL
index f9170bb..ad2bd3d 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -127,7 +127,7 @@ if (!defined($curl_h)) {
     close H;
 
     for my $e (sort @syms) {
-       if($e =~ /(OBSOLETE|^CURL_EXTERN|_LAST\z|_LASTENTRY\z)/) {
+       if($e =~ /(OBSOLETE|^CURL_EXTERN|^CURL_STRICTER\z|_LAST\z|_LASTENTRY\z)/) {
           next;
        }
        my ($group) = $e =~ m/^([^_]+_)/;
-- 
2.7.4

='/guix/log/gnu/packages/valgrind.scm'>log</a><a href='/guix/tree/gnu/packages/valgrind.scm?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'>tree</a><a href='/guix/commit/gnu/packages/valgrind.scm?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'>commit</a><a href='/guix/diff/gnu/packages/valgrind.scm?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/valgrind.scm'>
<input type='hidden' name='id' value='7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'>root</a>/<a href='/guix/log/gnu?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'>gnu</a>/<a href='/guix/log/gnu/packages?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'>packages</a>/<a href='/guix/log/gnu/packages/valgrind.scm?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0'>valgrind.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/valgrind.scm?id=7eb9176a6e5b116bc244a08ddd72d15cfeeb3ba0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-02-16 15:48:05 +0200'>2022-02-16</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=194b1a9297206b570328b48fd98b8f8890ad024d'>gnu: valgrind: Remove riscv64-linux from supported-systems.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/valgrind.scm (valgrind)[supported-systems]: New field.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-01-28 23:14:43 +0100'>2022-01-28</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=50f7402c6aa7b74645cf0db3fd1a965db3fd6ed2'>gnu: valgrind: Add version 3.18.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/valgrind.scm (valgrind-3.18): New variable.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-06-23 20:59:05 -0700'>2021-06-23</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=50fed5b52260bce2040a545facb2cba8b5977e90'>gnu: valgrind: Update to 3.17.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/valgrind.scm (valgrind): Update to 3.17.0.
</span></span></td><td>Chris Marusich</td></tr>
<tr><td><span title='2020-06-27 12:51:34 +0200'>2020-06-27</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=25ceae92ea6cddd2306fab9847ba091c17a0ae69'>gnu: valgrind: Update to 3.16.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/valgrind.scm (valgrind): Update to 3.16.1.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-06-27 12:29:24 +0200'>2020-06-27</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=b611597af8641b388dc9f8935b85895a71e9fb52'>gnu: valgrind: Don't depend on GDB.</a><span class='msg-avail'>...<span class='msg-tooltip'>...but add a special 'valgrind/interactive' variant for end users.

* gnu/packages/valgrind.scm (valgrind)[inputs]: Remove.
[properties]: New field.
(valgrind/interactive): New public variable.
</span></span></td><td>Marius Bakke</td></tr>