Avoid a type mismatch that shows up in C++11.
Taken from <https://bugs.debian.org/853560>.

--- a/src/rtphint.cpp	2012-05-20 16:11:53.000000000 -0600
+++ b/src/rtphint.cpp	2017-05-16 10:25:26.930705191 -0600
@@ -339,7 +339,7 @@
                 pSlash = strchr(pSlash, '/');
                 if (pSlash != NULL) {
                     pSlash++;
-                    if (pSlash != '\0') {
+                    if (*pSlash != '\0') {
                         length = (uint32_t)strlen(pRtpMap) - (pSlash - pRtpMap);
                         *ppEncodingParams = (char *)MP4Calloc(length + 1);
                         strncpy(*ppEncodingParams, pSlash, length);
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<div class='path'>path: <a href='/guix/log/?id=1ea1014e39508a15f8d908d805757aa29a0129c3'>root</a>/<a href='/guix/log/po?id=1ea1014e39508a15f8d908d805757aa29a0129c3'>po</a>/<a href='/guix/log/po/doc?id=1ea1014e39508a15f8d908d805757aa29a0129c3'>doc</a>/<a href='/guix/log/po/doc/guix-cookbook.pt_BR.po?id=1ea1014e39508a15f8d908d805757aa29a0129c3'>guix-cookbook.pt_BR.po</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/po/doc/guix-cookbook.pt_BR.po?id=1ea1014e39508a15f8d908d805757aa29a0129c3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-11-01 02:39:13 +0100'>2024-11-01</span></td><td><a href='/guix/commit/po/doc/guix-cookbook.pt_BR.po?id=dd63cd7876f8c6a6eb42170219c17659ff4daf42'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>Change-Id: I15d674cd8e88250daa4284e8137a808c5298548f
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2024-06-03 00:27:12 +0200'>2024-06-03</span></td><td><a href='/guix/commit/po/doc/guix-cookbook.pt_BR.po?id=834a4195241806784d4b321b95f06d85f458ce18'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/doc/guix-cookbook.sv.po: New file.
* po/doc/local.mk: Add 'sv' cookbook.
* po/doc/po4a.cfg (po4a_langs): Add 'sv'.
* doc/local.mk: Add 'sv' cookbook.
* doc/htmlxref.cnf: Update URLs for cookbook.
* doc/build.scm (%cookbook-languages): Add 'sv'.
* doc/guix-cookbook.texi (Top): Mention 'sv' cookbook.

Change-Id: Ibfeb7254f583f1c8827e8c2756bbb02880bcba46
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2024-04-01 14:09:20 +0200'>2024-04-01</span></td><td><a href='/guix/commit/po/doc/guix-cookbook.pt_BR.po?id=fa98837b1d9586b9ca7bf77dae22c3bde0fc59b5'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/guix/ar.po: New file.
* po/guix/LINGUAS: Add 'ar'.
* po/doc/guix-cookbook.pt_BR.po: New file.
* po/doc/local.mk: Add 'pt_BR' cookbook.
* doc/local.mk: Add 'pt_BR' cookbook.
* doc/htmlxref.cnf: Update URLs for cookbook.
* doc/build.scm (%cookbook-languages): Add 'ko', 'pt_BR'.
* doc/guix-cookbook.texi (Top): Mention 'ko', 'pt_BR' cookbook.

Change-Id: Id1846ca100263b3fc1fa2ed52654c670270ee809
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2022-04-02 18:14:43 +0200'>2022-04-02</span></td><td><a href='/guix/commit/po/doc/guix-cookbook.pt_BR.po?id=93bfd4d9c7ba7055c19f02128491b3a98a180860'>nls: Enforce translation thresholds.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/doc/guix-cookbook.es.po: Remove file.
* po/doc/guix-cookbook.fa.po: Remove file.
* po/doc/guix-cookbook.fi.po: Remove file.
* po/doc/guix-cookbook.pt_BR.po: Remove file.
* po/doc/guix-cookbook.ru.po: Remove file.
* po/doc/guix-cookbook.uk.po: Remove file.
* po/doc/guix-cookbook.zh_Hans.po: Remove file.
* po/doc/guix-manual.fa.po: Remove file.
* po/doc/guix-manual.fi.po: Remove file.
* po/doc/guix-manual.it.po: Remove file.
* po/doc/guix-manual.ko.po: Remove file.
* po/doc/guix-manual.sk.po: Remove file.
* po/doc/local.mk: Remove them.
* doc/local.mk: Remove them.
</span></span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2022-02-04 18:29:00 +0100'>2022-02-04</span></td><td><a href='/guix/commit/po/doc/guix-cookbook.pt_BR.po?id=8391a99d089322a39cbacb1e6dc2979d8b2ef7c9'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/doc/guix-cookbook.pt_BR.po: New file.
* po/doc/local.mk: Add it.
* doc/local.mk: Add pt_BR cookbook.
</span></span></td><td>Julien Lepiller</td></tr>