re PR go/49889 (Calling a function whose name is obscured by a local variable…

re PR go/49889 (Calling a function whose name is obscured by a local variable does not produce an error)

	PR go/49889
gccgo : Fixed bug 49889.
        Now the compiler emits a proper error when a function
        called in a tuple assignment statement can not be
        typed as a function.

From-SVN: r177310

gcc/go/gofrontend/expressions.cc

@@ -9682,6 +9682,8 @@ Call_result_expression::do_type()
   Function_type* fntype = ce->get_function_type();
   if (fntype == NULL)
     {
+      if (ce->issue_error())
+	this->report_error(_("expected function"));    
       this->set_is_error();
       return Type::make_error_type();
     }