[#2768] [GTKUI] [OSX] Fix invalid file error at startup

When installed to the system, not using .app, error is raised on startup
as nsapp_open_file is ignoring Deluge-bin but not deluge or deluge-gtk for
potential 'filename' when connecting NSApplicationOpenFile.

deluge/ui/gtkui/gtkui.py

@@ -203,8 +203,8 @@ class GtkUI(object):
 
         if deluge.common.osx_check() and gtk.gdk.WINDOWING == "quartz":
             def nsapp_open_file(osxapp, filename):
-                # Will be raised at app launch (python opening main script)
-                if filename.endswith('Deluge-bin'):
+                # Ignore command name which is raised at app launch (python opening main script).
+                if filename == sys.argv[0]:
                     return True
                 process_args([filename])
             self.osxapp.connect("NSApplicationOpenFile", nsapp_open_file)