drd: Handle pthread_cond_destroy() failure properly

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13198 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/drd_clientreq.h b/drd/drd_clientreq.h
index bdf54b3..f717729 100644
--- a/drd/drd_clientreq.h
+++ b/drd/drd_clientreq.h
@@ -125,7 +125,7 @@
    /* args: Addr */
    /* to notify the drd tool of a pthread_cond_destroy call. */
    VG_USERREQ__POST_COND_DESTROY,
-   /* args: Addr */
+   /* args: Addr cond, Bool destroy_succeeded */
    VG_USERREQ__PRE_COND_WAIT,
    /* args: Addr cond, Addr mutex, MutexT mt */
    VG_USERREQ__POST_COND_WAIT,