Added second check to toggle locate button

When the User was using the continue to next station button the locate button did not get turned on every time while picking

PyLoT.py

@@ -2539,7 +2539,13 @@ class MainWindow(QMainWindow):
                 self.drawPicks(station)
                 self.draw()
             if self.nextStation:
+                if not self.get_loc_flag() and self.check4Loc():
+                    self.locateEventAction.setEnabled(True)
+                    self.set_loc_flag(True)
+                elif self.get_loc_flag() and not self.check4Loc():
+                    self.set_loc_flag(False)
                 self.pickDialog(wfID - 1)
+
         else:
             self.update_status('picks discarded ({0})'.format(station))
         if not self.get_loc_flag() and self.check4Loc():