fixed -Wunused-result warning

e0d64df7 · Ilya Lavrenov · 77849d00 · e0d64df7
Commit e0d64df7 authored Jun 16, 2016 by Ilya Lavrenov
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cap_ffmpeg_impl.hpp modules/highgui/src/cap_ffmpeg_impl.hpp +2 -1

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--- a/modules/highgui/src/cap_ffmpeg_impl.hpp
+++ b/modules/highgui/src/cap_ffmpeg_impl.hpp
@@ -2287,7 +2287,8 @@ bool OutputMediaStream_FFMPEG::open(const char* fileName, int width, int height,
    #if LIBAVFORMAT_BUILD < CALC_FFMPEG_VERSION(53, 2, 0)
        av_write_header(oc_);
    #else
-        avformat_write_header(oc_, NULL);
+        if (avformat_write_header(oc_, NULL) != 0)
+            return false;
    #endif

    return true;