games-action/descent1-data: fix NonConsistentTarUsage [QA]

Issue: https://github.com/pkgcore/pkgcheck/issues/704
Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

games-action/descent1-data/descent1-data-1.4a-r1.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
@@ -57,7 +57,7 @@ src_unpack() {
 	# Documentation into doc
 	# Remainder into data
 
-	tar c \
+	tar -c -f - \
 		--mode=u+w \
 		--ignore-case \
 		--xform='s:.*/::xg' \
@@ -68,7 +68,7 @@ src_unpack() {
 		--xform='s:^[^/]+$:data/\0:x' \
 		--exclude="$(use doc || echo '*.pdf')" \
 		*.{faq,txt,pdf} **/*.{dem,hog,msn,pig} \
-		| tar x -C "${WORKDIR}"
+		| tar -x -f - -C "${WORKDIR}"
 
 	assert "tar failed"
 	eshopts_pop