dev-libs/elfutils: cleanup musl patch for 0.191

Thanks to Mark Wieelard for the review of the patches and suggestions for
cleaning up obsolete bits. He notes we still need a proper fix for FNM_EXTMATCH
though.

Signed-off-by: Sam James <sam@gentoo.org>

dev-libs/elfutils/elfutils-0.191.ebuild

@@ -50,7 +50,7 @@ BDEPEND="
 
 PATCHES=(
 	"${FILESDIR}"/${PN}-0.189-musl-aarch64-regs.patch
-	"${FILESDIR}"/${PN}-0.189-musl-macros.patch
+	"${FILESDIR}"/${PN}-0.191-musl-macros.patch
 )
 
 src_prepare() {

dev-libs/elfutils/files/elfutils-0.191-musl-macros.patch

@@ -0,0 +1,14 @@
+https://git.alpinelinux.org/aports/plain/main/elfutils/musl-macros.patch
+--- a/lib/system.h
++++ b/lib/system.h
+@@ -56,6 +56,10 @@ void error(int status, int errnum, const char *format, ...);
+ #error "err.h or error.h must be available"
+ #endif
+ 
++#if !defined(FNM_EXTMATCH)
++# define FNM_EXTMATCH 0
++#endif
++
+ /* error (EXIT_FAILURE, ...) should be noreturn but on some systems it
+    isn't.  This may cause warnings about code that should not be reachable.
+    So have an explicit error_exit wrapper that is noreturn (because it