Fix owfile and owcolor for new storeSpecificSettings semantics

storeSpecificSetting is now called if there is no current context

Author: markotoplak

Orange/widgets/data/owcolor.py

@@ -367,6 +367,8 @@ def set_data(self, data):
 
     def storeSpecificSettings(self):
         # Store the colors that were changed -- but not others
+        if self.current_context is None:
+            return
         self.current_context.disc_data = \
             [(var.name, var.values, "colors" in var.attributes and var.colors)
              for var in self.disc_colors]

Orange/widgets/data/owfile.py

@@ -434,6 +434,8 @@ def _describe(self, table):
         return text
 
     def storeSpecificSettings(self):
+        if self.current_context is None:
+            return
         self.current_context.modified_variables = self.variables[:]
 
     def retrieveSpecificSettings(self):