Make search window activate always response ok

tryton/gui/window/win_search.py

@@ -84,10 +84,8 @@ class WinSearch(NoModal):
 
     def sig_activate(self, *args):
         self.view.widget_tree.emit_stop_by_name('row_activated')
-        if not self.sel_multi:
-            self.win.response(gtk.RESPONSE_OK)
-            return True
-        return False
+        self.win.response(gtk.RESPONSE_OK)
+        return True
 
     def destroy(self):
         self.screen.destroy()