asx: fix potential null dereference

Ref. #29114
1 year ago · 57b68c9714
1 changed files with 5 additions and 1 deletions
--- a/modules/demux/playlist/asx.c
+++ b/modules/demux/playlist/asx.c
@ -614,7 +614,11 @@ static stream_t* PreparseStream( stream_t *p_demux )
         else
         {
            //strip xml prologue to avoid double conversion
-            char *tmp = strstr( psz_source, "?>" ) + 2;
+            char *tmp = strstr( psz_source, "?>" );
+            if ( tmp )
+                tmp += 2;
+            else
+                tmp = psz_source;
            tmp = FromCharset( encoding, tmp, strlen( tmp ) );
            free( psz_source );
            free( encoding );