Removed unnecessary USER call from GetFontMetrics. Fixes native USER.

diff --git a/objects/gdiobj.c b/objects/gdiobj.c
index 4126e22..cb68676 100644
--- a/objects/gdiobj.c
+++ b/objects/gdiobj.c
@@ -245,16 +245,18 @@
  */
 static void GetFontMetrics(HFONT handle, LPTEXTMETRICA lptm)
 {
-  HDC         hdc = GetDC((HWND)0);
+  HDC         hdc;
   HFONT       hOldFont;
 
+  hdc = CreateDCA("DISPLAY", NULL, NULL, NULL);
+
   hOldFont = (HFONT)SelectObject(hdc, handle);
 
   GetTextMetricsA(hdc, lptm);
 
   SelectObject(hdc, hOldFont);
 
-  ReleaseDC((HWND)0, hdc);
+  DeleteDC(hdc);
 }
 
 static inline void FixStockFontSize16(