use strchrnul() in place of strchr() and strlen()rm/strchrnul-not-strlen

Avoid scanning strings twice, once with strchr() and then with
strlen(), by using strchrnul().

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Rohit Mani <rohit.mani@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/pretty.c b/pretty.c
index 87db08bd74..99ba8ae975 100644
--- a/pretty.c
+++ b/pretty.c
@@ -549,14 +549,13 @@ static char *get_header(const struct commit *commit, const char *msg,
 	const char *line = msg;
 
 	while (line) {
-		const char *eol = strchr(line, '\n'), *next;
+		const char *eol = strchrnul(line, '\n'), *next;
 
 		if (line == eol)
 			return NULL;
-		if (!eol) {
+		if (!*eol) {
 			warning("malformed commit (header is missing newline): %s",
 				sha1_to_hex(commit->object.sha1));
-			eol = line + strlen(line);
 			next = NULL;
 		} else
 			next = eol + 1;