Consistently refuse to create bitmaps with 0 width or height.

Homogenize the behaviour of all ports when creating bitmaps with 0 width or
height: just fail always as it doesn't seem to make sense to support this.

Closes #16828.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78434 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/bitmap.cpp

@@ -755,6 +755,8 @@ bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc)
 {
     UnRef();
 
+    wxCHECK_MSG( w > 0 && h > 0, false, wxT("invalid bitmap size") );
+
     m_refData = new wxBitmapRefData;
 
     GetBitmapData()->m_width = w;