Start xanim only when we are ready to play

Renamed StartPlay in Play
Added wxVideoBaseDriver::GetSize


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3521 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/wxMMedia2/lib/sndwav.cpp

@@ -233,8 +233,10 @@ FAIL_WITH(m_output->Write(&signature, 4).LastWrite() != 4, wxSOUND_INVSTRM);
     pcm->Signed(TRUE);
     pcm->SetOrder(wxLITTLE_ENDIAN);
     
-    if (!SetSoundFormat(*pcm))
+    if (!SetSoundFormat(*pcm)) {
+      delete pcm;
       return FALSE;
+    }
 
     delete pcm;
   }