lang/gcc12-devel: Update to the 20211121 snapshot of GCC 12.0.0

We addressed the libsanitizer build issue slightly differently
upstream, and files/patch-libsanitzer-buildfix can be removed.

lang/gcc12-devel/Makefile

 # Created by: Gerald Pfeifer <gerald@FreeBSD.org>
 
 PORTNAME=	gcc
-PORTVERSION=	12.0.0.s20211114
+PORTVERSION=	12.0.0.s20211121
 CATEGORIES=	lang
 MASTER_SITES=	GCC/snapshots/${DIST_VERSION}
 PKGNAMESUFFIX=	${SUFFIX}-devel

lang/gcc12-devel/distinfo

-TIMESTAMP = 1637501854
-SHA256 (gcc-12-20211114.tar.xz) = 6f63c011a427228ccf3d3503852f5139c2e3281c574df861c2afab21086eee47
-SIZE (gcc-12-20211114.tar.xz) = 77458344
+TIMESTAMP = 1637785265
+SHA256 (gcc-12-20211121.tar.xz) = ffcdc0a91939fe2202fbcc91ed7abea61b509e3c207ac439867cb4523f601240
+SIZE (gcc-12-20211121.tar.xz) = 77512024

lang/gcc12-devel/files/patch-libsanitzer-buildfix

-The latest libsanitizer update added specific support for FreeBSD
-which includes <md5.h>. Alas GCC features it's own <md5.h> which
-is picked up, but does not provide everything necessary - boom.
-
-I have adjusted GCC's <md5.h> to accomodate for that and we now only
-need to activate that.
-
-Upstream bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102675
-
---- UTC
---- libsanitizer/sanitizer_common/sanitizer_platform_limits_freebsd.cpp
-+++ libsanitizer/sanitizer_common/sanitizer_platform_limits_freebsd.cpp
-@@ -15,6 +15,8 @@
- 
- #if SANITIZER_FREEBSD
- 
-+#define USE_SYSTEM_MD5
-+
- #include <sys/capsicum.h>
- #include <sys/consio.h>
- #include <sys/filio.h>