Squash a warning by making function declaration a proper prototype
diff --git a/shell/lash.c b/shell/lash.c
index c4d6ef0..3592989 100644
--- a/shell/lash.c
+++ b/shell/lash.c
@@ -1532,7 +1532,7 @@
 /* Make sure we have a controlling tty.  If we get started under a job
  * aware app (like bash for example), make sure we are now in charge so
  * we don't fight over who gets the foreground */
-static void setup_job_control()
+static void setup_job_control(void)
 {
 	int status;