Use CATCH instead of TRY in addr? as workaround for Windows problem

\ idea: Gerald Wodni

: addr? ( addr -- flag )

    TRY  c@  IFERROR  2drop  false nothrow  ELSE  drop  true  THEN   ENDTRY ;

    ['] c@ catch  IF  drop  false nothrow  ELSE  drop  true  THEN ;

: .var? ( addr -- flag )

    TRY  body> @ dovar: <> throw  IFERROR  2drop false nothrow

	ELSE  true  THEN   ENDTRY ;