app-arch/mscompress: pass -fsigned-char unconditionally

It doesn't make sense to pass this *unconditionally*. It's the default
on various ABIs, and where it isn't, we need to set it if the code
expects it (if we're not going to patch it).

Bug: https://bugs.gentoo.org/148320
Signed-off-by: Sam James <sam@gentoo.org>

app-arch/mscompress/mscompress-0.3-r2.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -25,7 +25,8 @@ src_prepare() {
 
 src_configure() {
 	tc-export CC
-	[[ $(tc-arch) == ppc* ]] && append-flags -fsigned-char
+	# bug #148320
+	append-flags -fsigned-char
 	econf
 }