Proper code for bugfix revision 12365 (which was uncommitted today).

Old log Message:
-----------
bug fix, when opening blender with a file (by double clicking or from the 
command line) - the initial undo state would be set to the default scene.
So holding Ctrl+Z would go back to the default .B.blend rather then the 
file that the user opened.

source/creator/creator.c

@@ -688,6 +688,10 @@ int main(int argc, char **argv)
 		else {
 			BKE_read_file(argv[a], NULL);
 			sound_initialize_sounds();
+			
+			/* happens for the UI on file reading too */
+			BKE_reset_undo();
+			BKE_write_undo("original");	/* save current state */
 		}
 	}