1 files changed, 1 insertions, 1 deletions
diff --git a/lib.c b/lib.c
index 0df787d..207cc7f 100644
--- a/lib.c
+++ b/lib.c
@@ -37,7 +37,7 @@ __attribute__((unused)) static int urldecode (char * o, const char * i /* o must
 	return 1;
 }
 static char * htmlspecialchars (const char * i) { /* remember to free the output */
-	if (!i)
+	if (!i)	// output will not be longer than strlen(i)*6
 		return NULL;
 	size_t s = 128;
 	char * o = malloc(s);