Fix denial of service (NULL dereference) in ASX parser

Closes #988

diff --git a/modules/demux/playlist/asx.c b/modules/demux/playlist/asx.c
index 10af9b1ff4b357e09a638ab4393eeb1f2f6f388e..cdb0902e5e478099bae34aaf01fa498d0689f47c 100644 (file)
--- a/modules/demux/playlist/asx.c
+++ b/modules/demux/playlist/asx.c
@@ -195,7 +195,7 @@ static int Demux( demux_t *p_demux )
 
         psz_parse = strcasestr( psz_parse, ">" );
 
-        while( ( psz_parse = strcasestr( psz_parse, "<" ) ) && psz_parse && *psz_parse )
+        while( psz_parse && ( psz_parse = strcasestr( psz_parse, "<" ) ) )
         {
             if( !strncasecmp( psz_parse, "<!--", 4 ) )
             {