[warnigns] fix lots of bugprone warnings

* update-settings-tests: properly cast types in getter/setter
* wtypes: fix PHANDLE definition
* wStream: fix INT64 write function warnings
* Simplify HANDLE copy in channels, just assign after proper cast

channels/ainput/server/ainput_main.c

@@ -226,7 +226,7 @@ static HANDLE ainput_server_get_channel_handle(ainput_server* ainput)
 	                           &BytesReturned) == TRUE)
 	{
 		if (BytesReturned == sizeof(HANDLE))
-			CopyMemory(&ChannelEvent, buffer, sizeof(HANDLE));
+			ChannelEvent = *(HANDLE*)buffer;
 
 		WTSFreeMemory(buffer);
 	}