[PATCH v3 2/3] json: Change `if (!strlen(str))` to `if (!str[0])`

[Ammar Faizi <ammarfaizi2@gnuweeb.org>]

From: Ammar Faizi <ammarfaizi2@gnuweeb.org>

No need to traverse the whole string. Using `!strlen(str)` as a
*conditional expression* is effectively the same with `!str[0]`.

Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
---
 json.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/json.c b/json.c
index cd3d5d74..8b650721 100644
--- a/json.c
+++ b/json.c
@@ -56,7 +56,7 @@ static char *strdup_escape(const char *str)
 	char *p, *ret;
 	int escapes;
 
-	if (!strlen(str))
+	if (!str[0])
 		return NULL;
 
 	escapes = 0;
-- 
Ammar Faizi