gdiplus: Return an error for consecutive GdipLockBitmapBit calls.

dlls/gdiplus/image.c

@@ -114,8 +114,7 @@ GpStatus WINGDIPAPI GdipBitmapLockBits(GpBitmap* bitmap, GDIPCONST GpRect* rect,
     if(flags & ImageLockModeUserInputBuf)
         return NotImplemented;
 
-    if((bitmap->lockmode & ImageLockModeWrite) || (bitmap->lockmode &&
-        (flags & ImageLockModeWrite)))
+    if(bitmap->lockmode)
         return WrongState;
 
     IPicture_get_Handle(bitmap->image.picture, &hbm);

dlls/gdiplus/tests/image.c

@@ -214,10 +214,8 @@ static void test_LockBits(void)
     /* read x2 */
     stat = GdipBitmapLockBits(bm, &rect, ImageLockModeRead, PixelFormat24bppRGB, &bd);
     expect(Ok, stat);
-    todo_wine {
-        stat = GdipBitmapLockBits(bm, &rect, ImageLockModeRead, PixelFormat24bppRGB, &bd);
-        expect(WrongState, stat);
-    }
+    stat = GdipBitmapLockBits(bm, &rect, ImageLockModeRead, PixelFormat24bppRGB, &bd);
+    expect(WrongState, stat);
 
     stat = GdipBitmapUnlockBits(bm, &bd);
     expect(Ok, stat);