Fix yet another memory leak: if NaClImcRecvTypedMessage is failed.
Fix yet another memory leak: if NaClImcRecvTypedMessage is failed.

It could be, for instance, when sel_ldr can't find nexe.

Review URL: http://codereview.chromium.org/1732006

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@2120 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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