po/Makefile: echo line should match actual command, build should pass even if .gmo files aren't being built

po/Makefile.in.in

@@ -79,8 +79,8 @@ CATALOGS = @CATALOGS@
 .po.gmo:
 	@lang=`echo $* | sed -e 's,.*/,,'`; \
 	test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
-	echo "$${cdcmd}rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics -o $${lang}.gmo $${lang}.po"; \
-	cd $(srcdir) && rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics -o t-$${lang}.gmo $${lang}.po && mv t-$${lang}.gmo $${lang}.gmo
+	echo "cd $(srcdir) && rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics -o t-$${lang}.gmo $${lang}.po && (mv t-$${lang}.gmo $${lang}.gmo 2>/dev/null || true)"; \
+	cd $(srcdir) && rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics -o t-$${lang}.gmo $${lang}.po && (mv t-$${lang}.gmo $${lang}.gmo 2>/dev/null || true)
 
 .sin.sed:
 	sed -e '/^#/d' $< > t-$@