Ingore errors when removing intermediate files recursively [ci skip]

template/Makefile.in

@@ -491,7 +491,7 @@ clean-local::
 	  enc/encinit.c enc/encinit.$(OBJEXT) $(pkgconfig_DATA) \
 	  ruby-runner.$(OBJEXT) ruby-runner.h \
 	|| $(NULLCMD)
-	$(Q)find . \( -name '*.bc' -o -name '*.[is]' \) -delete
+	$(Q)find . -depth \( -name '*.bc' -o -name '*.[is]' \) -delete 2> /dev/null || true
 	-$(Q)$(RMALL) exe/ *.dSYM
 
 distclean-local::