fixed a minor issue with checking return types of methods

MemberNodes.py

@@ -163,7 +163,7 @@ class MethodNode(ASTNode):
             if self.myType.name == "void":
                 if n.myType:
                     raise Exception("ERROR: return type of function {} doesn't match with return statement.".format(self.name))
-
+                return
             # Checking for non void cases
             if not self.myType.assignable(n.myType):
                 raise Exception("ERROR: return type of function {} doesn't match with return statement.".format(self.name))