Avoid crashing on empty test/edit lists

diff --git a/src/fccfg.c b/src/fccfg.c
index d8bbe8ddb595ec78c1bd124327ef12903f2fdebd..0d7f17e3392fe1b6b1ebf61ad8a0e0276237fb6c 100644 (file)
--- a/src/fccfg.c
+++ b/src/fccfg.c
@@ -134,8 +134,10 @@ FcSubstDestroy (FcSubst *s)
     while (s)
     {
        n = s->next;
-       FcTestDestroy (s->test);
-       FcEditDestroy (s->edit);
+       if (s->test)
+           FcTestDestroy (s->test);
+       if (s->edit)
+           FcEditDestroy (s->edit);
        s = n;
     }
 }