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winegstreamer: Avoid accessing NULL pointer if transform didn't provide a sample.

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This can happen with asynchronous decoding, such as with the VA-API
decodebin plugin for H264.
This commit is contained in:
Rémi Bernon 2022-09-21 11:39:34 +02:00 committed by Alexandre Julliard
parent 96acd9dc32
commit 54590472a7
1 changed files with 1 additions and 1 deletions
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2
dlls/winegstreamer/wg_allocator.c
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@ -164,7 +164,7 @@ static GstMemory *wg_allocator_alloc(GstAllocator *gst_allocator, gsize size,
pthread_mutex_lock(&allocator->mutex);
sample = allocator->request_sample(size, allocator->request_sample_context);
if (sample->max_size < size)
if (sample && sample->max_size < size)
InterlockedDecrement(&sample->refcount);
else
memory->sample = sample;