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avformat/allformats: test pointer to be used 

Two tests check the opposite pointer before using it. If only one of these
is set to a valid pointer, one of these functions will crash, the other will
ignore the pointer.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
AlexisWilke 2021-01-04 10:11:01 -08:00 committed by James Almer
parent 88519be8db
commit ca21cb1e36
1 changed files with 2 additions and 2 deletions
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4
libavformat/allformats.c
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@ -541,7 +541,7 @@ const AVOutputFormat *av_muxer_iterate(void **opaque)
if (i < size) { if (i < size) {
f = muxer_list[i]; f = muxer_list[i];
} else if (indev_list) { } else if (outdev_list) {
f = outdev_list[i - size]; f = outdev_list[i - size];
} }
@ -558,7 +558,7 @@ const AVInputFormat *av_demuxer_iterate(void **opaque)
if (i < size) { if (i < size) {
f = demuxer_list[i]; f = demuxer_list[i];
} else if (outdev_list) { } else if (indev_list) {
f = indev_list[i - size]; f = indev_list[i - size];
} }