Fix setting color depth of wxBitmap created from HBITMAP

When HBITMAP is assigned to wxBitmap with SetHBITMAP(), internal data
member representing wxBitmap's color depth should be set afterwards to
the bitmap color depth, not to the number of planes.

src/msw/clipbrd.cpp

@@ -478,7 +478,7 @@ void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
                 wxBM->SetHBITMAP((WXHBITMAP) hNewBitmap);
                 wxBM->SetWidth(bm.bmWidth);
                 wxBM->SetHeight(bm.bmHeight);
-                wxBM->SetDepth(bm.bmPlanes);
+                wxBM->SetDepth(bm.bmBitsPixels);
                 retval = wxBM;
                 break;
             }