matroskadec: invert a test

Originally committed as revision 14567 to svn://svn.ffmpeg.org/ffmpeg/trunk

matroskadec: invert a test
Originally committed as revision 14567 to svn://svn.ffmpeg.org/ffmpeg/trunk
a636a56b · Aurelien Jacobs · 4348571b · a636a56b
Commit a636a56b authored Aug 05, 2008 by Aurelien Jacobs
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matroskadec.c libavformat/matroskadec.c +4 -1

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--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1638,7 +1638,10 @@ matroska_read_header (AVFormatContext    *s,
    matroska_execute_seekhead(matroska);

    /* Have we found a cluster? */
-    if (ebml_peek_id(matroska, NULL) == MATROSKA_ID_CLUSTER) {
+    if (ebml_peek_id(matroska, NULL) != MATROSKA_ID_CLUSTER)
+        return -1;
+
+    {
        MatroskaTrack *tracks = matroska->tracks.elem;
        int i, j;
        AVStream *st;