1 files changed, 4 insertions, 1 deletions
diff --git a/common/compat.c b/common/compat.c
index 5a9702d..48614fa 100644
--- a/common/compat.c
+++ b/common/compat.c
@@ -525,7 +525,10 @@ strconcat (const char *first,
 	for (arg = first; arg; arg = va_arg (va, const char*)) {
 		size_t old_length = length;
 		length += strlen (arg);
-		return_val_if_fail (length >= old_length, NULL);
+		if (length < old_length) {
+			va_end (va);
+			return_val_if_reached (NULL);
+		}
 	}
 
 	va_end (va);