pacsort: test string is not NULL before strlen

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/src/util/pacsort.c b/src/util/pacsort.c
index 02b9084b..d864fdb9 100644
--- a/src/util/pacsort.c
+++ b/src/util/pacsort.c
@@ -399,9 +399,13 @@ static int vercmp(const void *p1, const void *p2)
 
 static char escape_char(const char *string)
 {
+	if(!string) {
+		return -1;
+	}
+
 	const size_t len = strlen(string);
 
-	if(!string || len > 2) {
+	if(len > 2) {
 		return -1;
 	}