x11-plugins/gkrellmss: fix commands in global scope

Closes: https://bugs.gentoo.org/788067
Signed-off-by: Sam James <sam@gentoo.org>

x11-plugins/gkrellmss/gkrellmss-2.6-r4.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -25,9 +25,13 @@ PATCHES=(
 	"${FILESDIR}"/${P}-fno-common.patch
 )
 
-PLUGIN_SO=( src/gkrellmss$(get_modname) )
 PLUGIN_DOCS=( Themes )
 
+src_configure() {
+	PLUGIN_SO=( src/gkrellmss$(get_modname) )
+	default
+}
+
 src_compile() {
 	addpredict /dev/snd
 	emake enable_nls=$(usex nls 1 0)