USBPcapCMD: Fix invalid free found by Coverity Scan.

CID #1147971: Copy-paste error
CID #1147990: Double free
USBPcapDriver: Explicitly initialize pdo_driverkey to NULL.

CID #1147988: Uninitialized pointer read
USBPcapCMD: Fix memory leak.

CID #1147981: Resource leak
USBPcapCMD: Fix memory leak.

CID #1147979: Resource leak
USBPcapDriver: Fix memory leak.

CID #1147978: Resource leak
USBPcapCMD: Fix input value sanity check.

CID #1147987: Untrusted pointer read
USBPcapDriver: Fix IRP pass down for Read/Write.

CID #1147976: Explicit null dereferenced
USBPcapCMD: Use correct deallocator.

CID #1147970: Incorrect deallocator used
USBPcapDriver: Sanity check buffer in USBPcapBufferWritePacket().

CID #1147977: Explicit null dereferenced
USBPcapDriver: Add sanity check.

CID #1147982: Dereference before null check
USBPcapDriver: Remove logically dead code.

CID #1147972: Logically dead code
CID #1147973: Logically dead code
USBPcapDriver: Remove unused pointer in release code.

CID #1147989: Unused pointer value
USBPcapCMD: Remove logically dead code.

CID #1147974: Logically dead code
USBPcapCMD: Fix endless stream of whitespaces.

Do not go above parent when iterating the device tree.

Display warning message if print_indent() is called with big values (>20).
USBPcapCMD: Unload ntdll.dll at exit.

CID #1147980: Resource leak
Use WinVer.nsh in installer.

This fixes installer on Windows 8.1.