[PATCH] mailinfo: reset CTE after each multipart

If the first part uses quoted-printable to protect iso8859-1
name in the commit log, and the second part was plain ascii text
patchfile without even Content-Transfer-Encoding subheader, we
incorrectly tried to decode the patch as quoted printable.

Signed-off-by: Junio C Hamano <junkio@cox.net>

mailinfo.c

@@ -707,6 +707,9 @@ static void handle_multipart_body(void)
 		if (!len) {
 			if (handle_multipart_one_part() < 0)
 				return;
+			/* Reset per part headers */
+			transfer_encoding = TE_DONTCARE;
+			charset[0] = 0;
 		}
 		else
 			check_subheader_line(line, len);