[Coverity] minor memleak in windows dep qualify.
[Coverity] minor memleak in windows dep qualify.

Ivan found a similar one earlier in the posix implementation:
http://codereview.chromium.org/8275014/

CID=101038
BUG= http://code.google.com/p/nativeclient/issues/detail?id=1264
Review URL: https://chromiumcodereview.appspot.com/9213016

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@7601 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client