Enable -Wshadow

This one really did bite me hard (see previous commit), so enable it by
default.

Fix some cases of shadowing throughout the codebase. None of these
change behavior, and all of these were correct code, and just tripped up
the warning.

1 files changed, 1 insertions, 1 deletions

diff --git a/demux/demux_lavf.c b/demux/demux_lavf.c
index 9b8881fc8a..e80db5aed4 100644
--- a/demux/demux_lavf.c
+++ b/demux/demux_lavf.c
@@ -649,7 +649,7 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
         t = av_dict_get(c->metadata, "title", NULL, 0);
         demuxer_add_chapter(demuxer, t ? bstr0(t->value) : bstr0(NULL),
                             start, end, i);
-        AVDictionaryEntry *t = NULL;
+        t = NULL;
         while ((t = av_dict_get(c->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) {
             demuxer_add_chapter_info(demuxer, i, bstr0(t->key),
                                      bstr0(t->value));