Correct copyright case ("Red Hat inc" -> "Red Hat, Inc."), as per bug 422692.

xpcom/io/SpecialSystemDirectory.cpp

@@ -240,9 +240,9 @@ GetUnixHomeDir(nsILocalFile** aFile)
 }
 
 /*
-  The following licence applies to the xdg_user_dir_lookup function:
+  The following license applies to the xdg_user_dir_lookup function:
 
-  Copyright (c) 2007 Red Hat, inc
+  Copyright (c) 2007 Red Hat, Inc.
 
   Permission is hereby granted, free of charge, to any person
   obtaining a copy of this software and associated documentation files