win-capture: Fix D3D leaks on swap chain release

For game capture, hook DXGI release function to release D3D objects if
the related swap chain is also being destroyed.

An added bonus is that the game capture hook will handle swap chain
recreation for applications that don't use ResizeBuffers.

plugins/win-capture/load-graphics-offsets.c

@@ -40,6 +40,8 @@ static inline bool load_offsets_from_string(struct graphics_offsets *offsets,
 		(uint32_t)config_get_uint(config, "dxgi", "present1");
 	offsets->dxgi.resize =
 		(uint32_t)config_get_uint(config, "dxgi", "resize");
+	offsets->dxgi2.release =
+		(uint32_t)config_get_uint(config, "dxgi", "release");
 
 	config_close(config);
 	return true;