dev-cpp/abseil-cpp: backport glibc-2.34 patch to 20200923.3

This version is still needed for some software, so let's
fix it with glibc-2.34 too.

Bug: https://bugs.gentoo.org/823990
See: https://forums.gentoo.org/viewtopic-t-1146048.html
Signed-off-by: Sam James <sam@gentoo.org>

dev-cpp/abseil-cpp/abseil-cpp-20200923.3.ebuild

@@ -36,6 +36,7 @@ RESTRICT="!test? ( test )"
 
 PATCHES=(
 	"${FILESDIR}/${PN}-20200923-arm_no_crypto.patch"
+	"${FILESDIR}/${PN}-20210324.1-glibc-2.34.patch"
 )
 
 src_prepare() {