mozilla: fix compilation.

projects/mozilla/vlcplugin.cpp

@@ -452,8 +452,8 @@ void VlcPlugin::set_player_window()
 int VlcPlugin::playlist_add( const char *mrl, libvlc_exception_t *ex )
 {
     int item = -1;
-    libvlc_media_t *p_m = libvlc_media_new(libvlc_instance,mrl,ex);
-    if( libvlc_exception_raised(ex) )
+    libvlc_media_t *p_m = libvlc_media_new(libvlc_instance,mrl);
+    if( p_m )
         return -1;
 
     libvlc_media_list_lock(libvlc_media_list);
@@ -470,9 +470,9 @@ int VlcPlugin::playlist_add( const char *mrl, libvlc_exception_t *ex )
 int VlcPlugin::playlist_add_extended_untrusted( const char *mrl, const char *name,
                     int optc, const char **optv, libvlc_exception_t *ex )
 {
-    libvlc_media_t *p_m = libvlc_media_new(libvlc_instance, mrl,ex);
+    libvlc_media_t *p_m = libvlc_media_new(libvlc_instance, mrl);
     int item = -1;
-    if( libvlc_exception_raised(ex) )
+    if( p_m )
         return -1;
 
     for( int i = 0; i < optc; ++i )