Bug 1897214 - Port bug 1882228: Prevent errors during incremental macOS build due to directories not being empty. r=clokep,arschmitz

Differential Revision: https://phabricator.services.mozilla.com/D210842

--HG--
extra : moz-landing-system : lando

mail/app/Makefile.in

@@ -118,7 +118,7 @@ MAC_BUNDLE_VERSION = $(shell $(PYTHON3) $(srcdir)/macversion.py --version=$(MOZ_
 
 .PHONY: repackage
 tools repackage:: $(DIST)/bin/$(MOZ_APP_NAME) $(objdir)/macbuild/Contents/MacOS-files.txt
-	rm -rf $(dist_dest)
+	rm -rf '$(dist_dest)'
 	$(MKDIR) -p '$(dist_dest)/Contents/MacOS'
 	$(MKDIR) -p '$(dist_dest)/$(LPROJ)'
 	rsync -a --exclude '*.in' $(srcdir)/macbuild/Contents '$(dist_dest)' --exclude English.lproj