jp: fixed traceback shown on a normal quit when a progression is finished

frontends/src/jp/base.py

@@ -272,7 +272,7 @@ class Jp(object):
         /!\: return must be used after calling this method !
         """
         assert self._need_loop
-        # XXX: python-dbus will show a traceback if we exit in a signal handler with an error code
+        # XXX: python-dbus will show a traceback if we exit in a signal handler
         # so we use this little timeout trick to avoid it
         GLib.timeout_add(0, self.quit, errcode)
 
@@ -496,7 +496,7 @@ class CommandBase(object):
                 pass
             self.onProgressFinished(metadata)
             if self.host.quit_on_progress_end:
-                self.host.quit()
+                self.host.quitFromSignal()
 
     def progressErrorHandler(self, uid, message, profile):
         if profile != self.profile: