concatdec: Do not pass NULL to memcmp

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
8 years ago · 99c68861f9
parent f605b56ad9
commit 99c68861f9
1 changed files with 1 additions and 1 deletions
--- a/libavformat/concatdec.c
+++ b/libavformat/concatdec.c
@ -120,7 +120,7 @@ static int add_file(AVFormatContext *avf, char *filename, ConcatFile **rfile,

    proto = avio_find_protocol_name(filename);
    proto_len = proto ? strlen(proto) : 0;
-    if (!memcmp(filename, proto, proto_len) &&
+    if (proto && !memcmp(filename, proto, proto_len) &&
        (filename[proto_len] == ':' || filename[proto_len] == ',')) {
        url = filename;
        filename = NULL;