[PATCH 4/8] Quiet GCC warnings about set but unused variables

[Marin Ramesa]

This is the second way to quiet GCC warnings about set but unused
variables during simple locks. The first one is here:

http://lists.gnu.org/archive/html/bug-hurd/2013-12/msg00006.html

Third way would be to declare an set mqueue and obj only if MACH_SLOCKS.

* ipc/ipc_port.c (ipc_port_set_seqno) (mqueue): Assign to itself to quiet GCC 
warning.
* vm/vm_pageout.c (vm_pageout_scan) (obj): Likewise. 

---
 ipc/ipc_port.c  | 2 +-
 vm/vm_pageout.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/ipc/ipc_port.c b/ipc/ipc_port.c
index 99a6ad4..a7d4b0c 100644
--- a/ipc/ipc_port.c
+++ b/ipc/ipc_port.c
@@ -417,7 +417,7 @@ ipc_port_set_seqno(port, seqno)
        ipc_port_t port;
        mach_port_seqno_t seqno;
 {
-       ipc_mqueue_t mqueue;
+       ipc_mqueue_t mqueue = mqueue; /* Quiet GCC warning. */
 
        mqueue = ipc_port_lock_mqueue(port);
        port->ip_seqno = seqno;
diff --git a/vm/vm_pageout.c b/vm/vm_pageout.c
index 46ba56b..3373904 100644
--- a/vm/vm_pageout.c
+++ b/vm/vm_pageout.c
@@ -574,7 +574,7 @@ void vm_pageout_scan()
 
                while ((vm_page_inactive_count < vm_page_inactive_target) &&
                       !queue_empty(&vm_page_queue_active)) {
-                       vm_object_t obj;
+                       vm_object_t obj = obj; /* Quiet GCC warning. */
 
                        vm_pageout_active++;
                        m = (vm_page_t) queue_first(&vm_page_queue_active);
-- 
1.8.1.4