Patch by Barrett:

Initialize the stream's IO buffer, otherwise it could crash in ~StreamBase().
It's only initialized when the media format was actually successfully probed.
Fix #6595. Thanks.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39374 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/media/plugins/ffmpeg/AVFormatReader.cpp

@@ -229,6 +229,8 @@ StreamBase::StreamBase(BPositionIO* source, BLocker* sourceLock,
 	fStreamBuildsIndexWhileReading(false)
 {
 	// NOTE: Don't use streamLock here, it may not yet be initialized!
+
+	fIOContext.buffer = NULL;
 	av_new_packet(&fPacket, 0);
 	memset(&fFormat, 0, sizeof(media_format));
 }