Even more shmctl fixings from Reuben.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@260 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/vg_syscall_mem.c b/vg_syscall_mem.c
index bdc87a4..34aabed 100644
--- a/vg_syscall_mem.c
+++ b/vg_syscall_mem.c
@@ -1414,7 +1414,7 @@
 #                    if defined(IPC_64)
                      cmd = cmd & (~IPC_64);
 #                    endif
-                     out_arg = arg3 == SHM_STAT || arg3 == IPC_STAT;
+                     out_arg = cmd == SHM_STAT || cmd == IPC_STAT;
                      if ( out_arg )
                         must_be_writable( tst, 
                            "shmctl(SHM_STAT or IPC_STAT,buf)",