winex11.drv: Don't use the specified DC when mapping RGB colors for a DIB.

dlls/gdi32/tests/bitmap.c

@@ -1107,10 +1107,10 @@ static void test_GetDIBits_selected_DIB(UINT bpp)
             break;
         }
     }
-    todo_wine
-    {
-        ok(equalContents, "GetDIBits with DIB selected in DC: Invalid DIB bits\n");
-    }
+    if (bpp != 1)
+        ok(equalContents, "GetDIBits with %d bpp DIB selected in DC: Invalid DIB bits\n",bpp);
+    else
+        todo_wine ok(equalContents, "GetDIBits with %d bpp DIB selected in DC: Invalid DIB bits\n",bpp);
 
     HeapFree(GetProcessHeap(), 0, bits2);
     DeleteDC(dc);

dlls/winex11.drv/dib.c

@@ -312,7 +312,7 @@ static int *X11DRV_DIB_GenColorMap( X11DRV_PDEVICE *physDev, int *colorMapping,
             }
             else
                 for (i = start; i < end; i++, rgb++)
-                    colorMapping[i] = X11DRV_PALETTE_ToPhysical( physDev, RGB(rgb->rgbRed,
+                    colorMapping[i] = X11DRV_PALETTE_ToPhysical( NULL, RGB(rgb->rgbRed,
                                                                 rgb->rgbGreen,
                                                                 rgb->rgbBlue));
         }
@@ -336,7 +336,7 @@ static int *X11DRV_DIB_GenColorMap( X11DRV_PDEVICE *physDev, int *colorMapping,
             }
             else
                 for (i = start; i < end; i++, rgb++)
-                    colorMapping[i] = X11DRV_PALETTE_ToPhysical( physDev, RGB(rgb->rgbtRed,
+                    colorMapping[i] = X11DRV_PALETTE_ToPhysical( NULL, RGB(rgb->rgbtRed,
                                                                rgb->rgbtGreen,
                                                                rgb->rgbtBlue));
         }