Fix crash in ass_set_style_overrides

Set pointer to the style overrides to NULL to make sure a freed buffer
will not be accessed anymore later. Reported by uau.

diff --git a/libass/ass_library.c b/libass/ass_library.c
index 5bca64485adfce6314685b3c601852d789d1ccd7..b33ca551b0a33a9eabfa8383cda3c648e51f089f 100644 (file)
--- a/libass/ass_library.c
+++ b/libass/ass_library.c
@@ -78,6 +78,7 @@ void ass_set_style_overrides(ASS_Library *priv, char **list)
             free(*p);
     }
     free(priv->style_overrides);
+    priv->style_overrides = NULL;
 
     if (!list)
         return;