Bug 588386 - Make DMG INNER_UNMAKE_PACKAGE nest in other commands properly, r=bsmedberg a=blocking2.0

--HG--
extra : rebase_source : 4c2061986a5583ce437b5d120eec8a1c03f26869

toolkit/mozapps/installer/packager.mk

@@ -203,8 +203,7 @@ INNER_UNMAKE_PACKAGE	= \
     hdiutil unflatten $(MOZ_PKG_APPNAME).tmp.dmg && \
     { /Developer/Tools/DeRez -skip plst -skip blkx $(MOZ_PKG_APPNAME).tmp.dmg > "$(MOZ_PKG_MAC_RSRC)" || { rm -f $(MOZ_PKG_APPNAME).tmp.dmg && false; }; } && \
     rm -f $(MOZ_PKG_APPNAME).tmp.dmg; \
-  fi; \
-  $(NULL)
+  fi
 # The plst and blkx resources are skipped because they belong to each
 # individual dmg and are created by hdiutil.
 SDK_SUFFIX = .tar.bz2