Replace CONFIG.get by getitem call

introduced in 3feeceb952bc

tryton/gui/window/view_form/view/form_gtk/image.py

@@ -97,7 +97,7 @@ class Image(BinaryMixin, Widget):
         if self.field:
             value = self.field.get_client(self.record)
         if isinstance(value, int):
-            if value > CONFIG.get('image.max_size'):
+            if value > CONFIG['image.max_size']:
                 value = False
             else:
                 value = self.field.get_data(self.record)

tryton/gui/window/view_form/view/list_gtk/widget.py

@@ -530,7 +530,7 @@ class Image(GenericText):
         field = record[self.field_name]
         value = field.get_client(record)
         if isinstance(value, int):
-            if value > CONFIG.get('image.max_size'):
+            if value > CONFIG['image.max_size']:
                 value = None
             else:
                 value = field.get_data(record)