windowscodecs: Implement Palette_InitializeFromBitmap.

[Dmitry Timoshkov]

---
 dlls/windowscodecs/palette.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/dlls/windowscodecs/palette.c b/dlls/windowscodecs/palette.c
index f033012..ff7e179 100644
--- a/dlls/windowscodecs/palette.c
+++ b/dlls/windowscodecs/palette.c
@@ -450,8 +450,11 @@ static HRESULT WINAPI PaletteImpl_InitializeCustom(IWICPalette *iface,
 static HRESULT WINAPI PaletteImpl_InitializeFromBitmap(IWICPalette *iface,
     IWICBitmapSource *pISurface, UINT colorCount, BOOL fAddTransparentColor)
 {
-    FIXME("(%p,%p,%u,%i): stub\n", iface, pISurface, colorCount, fAddTransparentColor);
-    return E_NOTIMPL;
+    TRACE("(%p,%p,%u,%d)\n", iface, pISurface, colorCount, fAddTransparentColor);
+
+    if (!pISurface) return E_INVALIDARG;
+
+    return IWICBitmapSource_CopyPalette(pISurface, iface);
 }
 
 static HRESULT WINAPI PaletteImpl_InitializeFromPalette(IWICPalette *iface,
-- 
1.7.11.4