games-engines/fs2_open: Added patch to fix linker QA issue

Closes: https://bugs.gentoo.org/836249
Package-Manager: Portage-3.0.30, Repoman-3.0.3
Signed-off-by: Jonas Frei <freijon@pm.me>

games-engines/fs2_open/files/fs2_open-21.4.1-dont-override-ldflags.patch

@@ -0,0 +1,14 @@
+--- fs2_open-21.4.1/cmake/toolchain-gcc.cmake	2021-11-01 18:00:53.000000000 +0100
++++ fs2_open-21.4.1/cmake/toolchain-gcc.cmake	2022-03-27 17:52:26.738107292 +0200
+@@ -27,6 +27,11 @@
+ set(COMPILER_FLAGS "")
+ set(LINKER_FLAGS "")
+ 
++# For C and C++, the values can be overwritten independently
++if(DEFINED ENV{LDFLAGS})
++    set(LINKER_FLAGS $ENV{LDFLAGS})
++endif()
++
+ if (GCC_USE_GOLD)
+ 	OPTION(GCC_INCREMENTAL_LINKING "Use incremental linking" OFF)
+ 	set(LINKER_FLAGS "${LINKER_FLAGS} -fuse-ld=gold")

games-engines/fs2_open/fs2_open-21.4.1-r2.ebuild

@@ -44,6 +44,7 @@ RDEPEND="${DEPEND}"
 BDEPEND=""
 PATCHES=(
 	"${FILESDIR}/${P}-dont-build-lz4.patch"
+	"${FILESDIR}/${P}-dont-override-ldflags.patch"
 	"${FILESDIR}/${P}-make-arch-independent.patch"
 	"${FILESDIR}/${P}-version-fix.patch"
 )