no shadowing error for nested functions

[dlangBugzillaToGithub]

Nicholas Wilson (@thewilsonator) reported this on 2019-06-16T02:13:58Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=19972

Description

float x;
void test()
{
    short x;
    void nested() const
    {
        int x;
        pragma(msg, typeof(.x)); // float - fine disambiguated with leading .
        pragma(msg, typeof( x)); // int - ?? should give error
    }
}


this should give an error that the int x shadows the short x