[PATCH] dmloader: Fix a memory leak

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=46441

Your paranoid android.


=== wvistau64_fr (32 bit report) ===

dmloader:
loader.c:105: Test failed: SetSearchDirectory failed with 0x88781181
loader.c:107: Test failed: SetSearchDirectory failed with 0x88781181

=== w8 (32 bit report) ===

dmloader:
loader.c:105: Test failed: SetSearchDirectory failed with 0x88781181
loader.c:107: Test failed: SetSearchDirectory failed with 0