Since qlt_remove_target() only calls qlt_release() if
vha->vha_tgt.qla_tgt != NULL, checking that pointer inside qlt_release()
is not necessary. This patch avoids that Coverity reports the following:
CID 188348 (#1 of 1): Dereference after null check (FORWARD_NULL)
var_deref_model: Passing null pointer &vha->vha_tgt.qla_tgt->tgt_list_entry
to list_del, which dereferences it.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8394 d57e44dd-8a1f-0410-8b47-8ef2f437770f