lib/colors: keep static analyzer happy [coverity scan]

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/lib/colors.c b/lib/colors.c
index bea7bd1d77c441b5d3c95b685bacf1132538fc8b..29f5c8569cf5a1a331ac4e05814582f82a23f315 100644 (file)
--- a/lib/colors.c
+++ b/lib/colors.c
@@ -424,8 +424,10 @@ static int cn_sequence(const char *str, char **seq)
                in++;
        }
 
-       assert ((out - *seq) <= len);
-       *out = '\0';
+       if (out) {
+               assert ((out - *seq) <= len);
+               *out = '\0';
+       }
 
        return 0;
 }