Fix checked arg

Author: macevhicz

preditor/scintilla/documenteditor.py

@@ -142,7 +142,7 @@ def __init__(self, parent, filename='', lineno=0, delayable_engine='default'):
         self.customContextMenuRequested.connect(self.showMenu)
         self.selectionChanged.connect(self.updateSelectionInfo)
         window = self.window()
-        if hasattr(window, 'openFileMonitor'):
+        if hasattr(window, 'styleSheetChanged'):
             window.styleSheetChanged.connect(self.updateColorScheme)
 
         # Create shortcuts