mysql-test-run.pl - fix strict subs in HAVE_WIN32_CONSOLE (#1521)

Fix mtr error:

Bareword "HAVE_WIN32_CONSOLE" not allowed while "strict subs" in use at mysql-test-run.pl line 387.
Execution of mysql-test-run.pl aborted due to compilation errors.

Added in e3f5789a

mysql-test/mysql-test-run.pl

@@ -380,6 +380,8 @@ my $set_titlebar;
        $have_win32_console = 1;
      };
      eval 'sub HAVE_WIN32_CONSOLE { $have_win32_console }';
+   } else {
+     sub HAVE_WIN32_CONSOLE { 0 };
    }
 }