shell32/tests: Release the test desktop interface on all appropriate exit paths in ParseDisplayName tests.

In the current code NTLMv2 is used when talking about second generation
NTLM crypto algorithms. Most other publiations call this NTLM2, and use
NTLMv2 to describe a different crypto handshake that can be used by
either NTLM1 or NTLM2 crypto.

Mono calls GdipMeasureString with a height so large that rounding and
converting it to an integer gives a negative result.