Add missing volatile qualifier.

Yet another silly mistake in 0709b7ee72e4bc71ad07b7120acd117265ab51d0,
again found by buildfarm member castoroides.

diff --git a/src/backend/storage/lmgr/s_lock.c b/src/backend/storage/lmgr/s_lock.c
index e8d3502775155176785344adcf2c811ae4067dc6..1a5575782b96b17309b11e3527026ec016afdb41 100644 (file)
--- a/src/backend/storage/lmgr/s_lock.c
+++ b/src/backend/storage/lmgr/s_lock.c
@@ -156,7 +156,7 @@ s_lock(volatile slock_t *lock, const char *file, int line)
 
 #ifdef USE_DEFAULT_S_UNLOCK
 void
-s_unlock(slock_t *lock)
+s_unlock(volatile slock_t *lock)
 {
 #ifdef TAS_ACTIVE_WORD
    /* HP's PA-RISC */