Makefile: call git2spec.pl with LANG=C

Makefile

@@ -87,7 +87,7 @@ dracut-$(VERSION).tar.bz2: doc
 rpm: dracut-$(VERSION).tar.bz2
 	rpmbuild=$$(mktemp -d -t rpmbuild-dracut.XXXXXX); src=$$(pwd); \
 	cp dracut-$(VERSION).tar.bz2 "$$rpmbuild"; \
-	$$src/git2spec.pl $(VERSION) "$$rpmbuild" < dracut.spec > $$rpmbuild/dracut.spec; \
+	LANG=C $$src/git2spec.pl $(VERSION) "$$rpmbuild" < dracut.spec > $$rpmbuild/dracut.spec; \
 	(cd "$$rpmbuild"; rpmbuild --define "_topdir $$PWD" --define "_sourcedir $$PWD" \
 	        --define "_specdir $$PWD" --define "_srcrpmdir $$PWD" \
 		--define "_rpmdir $$PWD" -ba dracut.spec; ) && \