Improve 'recover' implementation

Cython/Compiler/ExprNodes.py

@@ -11399,16 +11399,11 @@ class RecoverNode(ExprNode):
             error(self.pos, "Can only recover cypclass (not '%s')" % operand_type)
             self.type = PyrexTypes.error_type
             return self
-        if operand_type.is_qualified_cyp_class:
-            self.generate_runtime_check = operand_type.qualifier not in ('iso', 'iso~')
-            self.check_refcount_only = operand_type.qualifier in ('active', 'lock', 'locked')
-            if operand_type.qualifier == 'iso~':
-                self.type = operand_type
-            else:
-                self.type = PyrexTypes.cyp_class_qualified_type(operand_type.qual_base_type, 'iso~')
+        self.generate_runtime_check = operand_type.qualifier not in ('iso', 'iso~')
+        self.check_refcount_only = operand_type.qualifier in ('active', 'lock', 'locked')
+        if operand_type.qualifier == 'iso~':
+            self.type = operand_type
         else:
-            self.generate_runtime_check = True
-            self.check_refcount_only = False
             self.type = PyrexTypes.cyp_class_qualified_type(operand_type, 'iso~')
         solid_operand = self.operand
         while isinstance(solid_operand, TypecastNode) and not solid_operand.is_temp: