signal: make stack_refcount static.

* signal.c (stack_refcount): This variable is referenced only
from two static functions here; it should be static.

1 files changed, 1 insertions, 1 deletions

diff --git a/signal.c b/signal.c
index f7dda4c7..574defe1 100644
--- a/signal.c
+++ b/signal.c
@@ -218,7 +218,7 @@ void sig_init(void)
 #if HAVE_SIGALTSTACK
 
 static mem_t *stack;
-int stack_refcount;
+static int stack_refcount;
 
 static void addref_alt_stack(void)
 {