GSdx: Fixed a memory leak in m_weavebob when changing interlacing modes (same thing that caused the m_merge leak -- I chose to delete instead of recycle since I doubt the texture would be useful for anything besides the 1-time interlacing setup, so no point cluttering the pool with it).

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@2051 96395faa-99c1-11dd-bbfe-3dabce05a288

plugins/GSdx/GSDevice.cpp

@@ -232,6 +232,7 @@ void GSDevice::Interlace(const GSVector2i& ds, int field, int mode, float yoffse
 {
 	if(!m_weavebob || !(m_weavebob->GetSize() == ds))
 	{
+		delete m_weavebob;
 		m_weavebob = CreateRenderTarget(ds.x, ds.y, false);
 	}