[FFmpeg-cvslog] avdevice/dshow: Check ICaptureGraphBuilder2_SetFiltergraph() for failure

[Michael Niedermayer]

ffmpeg | branch: release/2.8 | Michael Niedermayer <michael at niedermayer.cc> | Mon May 27 01:52:25 2024 +0200| [f396fcf8bccbe6e252b9e0b6d4ceac06f14f1a1f] | committer: Michael Niedermayer

avdevice/dshow: Check ICaptureGraphBuilder2_SetFiltergraph() for failure

Fixes: CID1591939 Logically dead code

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 4c285bb2789667bcf014ede8b0ab06ebbbee833f)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f396fcf8bccbe6e252b9e0b6d4ceac06f14f1a1f
---

 libavdevice/dshow.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavdevice/dshow.c b/libavdevice/dshow.c
index 0c2eca02ee..3911dab3f3 100644
--- a/libavdevice/dshow.c
+++ b/libavdevice/dshow.c
@@ -853,7 +853,7 @@ dshow_open_device(AVFormatContext *avctx, ICreateDevEnum *devenum,
         av_log(avctx, AV_LOG_ERROR, "Could not create CaptureGraphBuilder2\n");
         goto error;
     }
-    ICaptureGraphBuilder2_SetFiltergraph(graph_builder2, graph);
+    r = ICaptureGraphBuilder2_SetFiltergraph(graph_builder2, graph);
     if (r != S_OK) {
         av_log(avctx, AV_LOG_ERROR, "Could not set graph for CaptureGraphBuilder2\n");
         goto error;