unionfs: fix memory leak in patternlist_add

Found using the Clang Static Analyzer.

* pattern.c (patternlist_add): Fix memory leak.

1 files changed, 3 insertions, 0 deletions

diff --git a/pattern.c b/pattern.c
index 409ed23..fd38cf5 100644
--- a/pattern.c
+++ b/pattern.c
@@ -52,7 +52,10 @@ patternlist_add (struct patternlist *list, char *pattern)
     err = ENOMEM;
 
   if (err)
+    {
+      free (dup);
       return err;
+    }
 
   listentry->pattern = dup;