fix switch_compare function

Author: LAKESIDE\LindaT18

PythonGUI_apps/FLIM_analysis/FLIM_plot.py

@@ -154,7 +154,7 @@ def switch_compare(self):
 				self.roi2_plot.show()
 			else:
 				self.roi2.hide()
-				self.roi2.hide()
+				self.roi2_plot.hide()
 		else:
 			if hasattr(self, "roi2"):
 				self.roi2.hide()