Fix for error at pcap and vcp level on Windows causes crash

include/icsneo/platform/windows/pcap.h

@@ -27,7 +27,6 @@ public:
 	bool close();
 private:
 	PCAPDLL pcap;
-	device_errorhandler_t err;
 	char errbuf[PCAP_ERRBUF_SIZE] = { 0 };
 	neodevice_t& device;
 	uint8_t deviceMAC[6];

include/icsneo/platform/windows/vcp.h

@@ -35,7 +35,6 @@ private:
 	bool open(bool fromAsync);
 	bool opening = false;
 	neodevice_t& device;
-	device_errorhandler_t err;
 	HANDLE handle = INVALID_HANDLE_VALUE;
 	OVERLAPPED overlappedRead = {};
 	OVERLAPPED overlappedWrite = {};