Memory Leakage when repeating create and delete instance

[hansuk-kim-wst]

I am using UnityCaptureFilter for my project. There is a memory leakage when deleting sender instance if there is at least one receiver.
Adding UnmapViewOfFile in the destructor of SharedImageMemory solves it.

~SharedImageMemory()
{
	...
	if (m_pSharedBuf) UnmapViewOfFile(m_pSharedBuf);	// added. prevent memory leak.
}