mailinfo: don't insert header prefix for handle_content_type()

rscharfe · gitster · commit 517b60564e2c · 2020-02-10T09:27:13.000-08:00
handle_content_type() only cares about the value after "Content-Type: ";
there is no need to insert that string for it.

Suggested-by: Eric Sunshine &lt;sunshine@sunshineco.com&gt;
Signed-off-by: René Scharfe &lt;l.s.r@web.de&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/mailinfo.c b/mailinfo.c
@@ -570,7 +570,6 @@ static int check_header(struct mailinfo *mi,
 		len = strlen("Content-Type: ");
 		strbuf_add(&sb, line->buf + len, line->len - len);
 		decode_header(mi, &sb);
-		strbuf_insertstr(&sb, 0, "Content-Type: ");
 		handle_content_type(mi, &sb);
 		ret = 1;
 		goto check_header_out;
