* Makefile.in (ns-app): Fix typo that broke build on OS X.

Reported by David Caldwell in:
http://lists.gnu.org/archive/html/emacs-devel/2014-06/msg00251.html

src/ChangeLog

+2014-06-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* Makefile.in (ns-app): Fix typo that broke build on OS X.
+	Reported by David Caldwell in:
+	http://lists.gnu.org/archive/html/emacs-devel/2014-06/msg00251.html
+
 2014-06-16  Dmitry Antipov  <dmantipov@yandex.ru>
 
 	Do not ask for XRender extension each time XFT font is opened.

src/Makefile.in

@@ -519,7 +519,7 @@ emacs.res: $(ntsource)/emacs.rc \
 	  -o $@ $(ntsource)/emacs.rc
 
 ns-app: emacs$(EXEEXT)
-	$(MAKE) -C ./nextstep all
+	$(MAKE) -C ../nextstep all
 
 .PHONY: mostlyclean clean bootstrap-clean distclean maintainer-clean
 .PHONY: versionclean extraclean