gdi32: Use ntgdi name for GetPixel.

dlls/gdi32/gdi32.spec

@@ -327,7 +327,7 @@
 @ stdcall GetOutlineTextMetricsW(long long ptr)
 @ stdcall GetPaletteEntries(long long long ptr)
 @ stdcall GetPath(long ptr ptr long)
-@ stdcall GetPixel(long long long)
+@ stdcall GetPixel(long long long) NtGdiGetPixel
 @ stdcall GetPixelFormat(long)
 @ stdcall GetPolyFillMode(long)
 @ stdcall GetROP2(long)

dlls/gdi32/painting.c

@@ -416,9 +416,9 @@ COLORREF WINAPI NtGdiSetPixel( HDC hdc, INT x, INT y, COLORREF color )
 }
 
 /***********************************************************************
- *           GetPixel    (GDI32.@)
+ *           NtGdiGetPixel    (win32u.@)
  */
-COLORREF WINAPI GetPixel( HDC hdc, INT x, INT y )
+COLORREF WINAPI NtGdiGetPixel( HDC hdc, INT x, INT y )
 {
     PHYSDEV physdev;
     COLORREF ret;

include/ntgdi.h

@@ -166,8 +166,9 @@ BOOL     WINAPI NtGdiGetMiterLimit( HDC hdc, FLOAT *limit );
 COLORREF WINAPI NtGdiGetNearestColor( HDC hdc, COLORREF color );
 UINT     WINAPI NtGdiGetNearestPaletteIndex( HPALETTE hpalette, COLORREF color );
 UINT     WINAPI NtGdiGetOutlineTextMetricsInternalW( HDC hdc, UINT cbData,
-                                                     OUTLINETEXTMETRICW *otm, ULONG opts);
+                                                     OUTLINETEXTMETRICW *otm, ULONG opts );
 INT      WINAPI NtGdiGetPath( HDC hdc, POINT *points, BYTE *types, INT size );
+COLORREF WINAPI NtGdiGetPixel( HDC hdc, INT x, INT y );
 INT      WINAPI NtGdiGetRandomRgn( HDC hdc, HRGN region, INT code );
 DWORD    WINAPI NtGdiGetRegionData( HRGN hrgn, DWORD count, RGNDATA *data );
 INT      WINAPI NtGdiGetRgnBox( HRGN hrgn, RECT *rect );