Fix mac-nm script to support filenames w/spaces

Review URL: http://codereview.chromium.org/164476


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2683 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/mac-nm

@@ -12,7 +12,7 @@
 # needs to be parsed, which requires a lot of knowledge to be coded in.
 
 if [ "`which c++filt`" == "" ]; then
-  nm $@
+  nm "$@"
 else
-  nm $@ | c++filt -p -i
+  nm "$@" | c++filt -p -i
 fi