[PATCH 2/6] winegstreamer: Ignore an assert in wg_parser.

[Torge Matthies]

From: Torge Matthies

This gets hit when a wg_parser receives GST_EVENT_FLUSH_START between the wg_parser_stream_get_buffer function return
and the wg_parser_stream_release_buffer call. In this case the NULL buffer can be ignored, it does no harm and there
is no memory leak from this.
---
 dlls/winegstreamer/wg_parser.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/dlls/winegstreamer/wg_parser.c b/dlls/winegstreamer/wg_parser.c
index 021aa66ae12..93046e14766 100644
--- a/dlls/winegstreamer/wg_parser.c
+++ b/dlls/winegstreamer/wg_parser.c
@@ -412,11 +412,12 @@ static NTSTATUS wg_parser_stream_release_buffer(void *args)

pthread_mutex_lock(&parser->mutex);

-    assert(stream->buffer);
-
-    gst_buffer_unmap(stream->buffer, &stream->map_info);
-    gst_buffer_unref(stream->buffer);
-    stream->buffer = NULL;
+    if (stream->buffer)
+    {
+        gst_buffer_unmap(stream->buffer, &stream->map_info);
+        gst_buffer_unref(stream->buffer);
+        stream->buffer = NULL;
+    }

pthread_mutex_unlock(&parser->mutex);
     pthread_cond_signal(&stream->event_empty_cond);