Updates to a number of apps to remove warnings/compile errors under libc5.
Tested under both libc5 and libc6 and all seems well with these fixes.
 -Erik
diff --git a/init/halt.c b/init/halt.c
index bcd69b9..2ca36d0 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -28,8 +28,8 @@
 {
 #ifdef BB_FEATURE_LINUXRC
 	/* don't assume init's pid == 1 */
-	exit(kill(*(findPidByName("init")), SIGUSR1));
+	return(kill(*(findPidByName("init")), SIGUSR1));
 #else
-	exit(kill(1, SIGUSR1));
+	return(kill(1, SIGUSR1));
 #endif
 }
diff --git a/init/poweroff.c b/init/poweroff.c
index bc8e677..126a0fb 100644
--- a/init/poweroff.c
+++ b/init/poweroff.c
@@ -28,8 +28,8 @@
 {
 #ifdef BB_FEATURE_LINUXRC
 	/* don't assume init's pid == 1 */
-	exit(kill(*(findPidByName("init")), SIGUSR2));
+	return(kill(*(findPidByName("init")), SIGUSR2));
 #else
-	exit(kill(1, SIGUSR2));
+	return(kill(1, SIGUSR2));
 #endif
 }
diff --git a/init/reboot.c b/init/reboot.c
index 6e1f3d5..bde8dbd 100644
--- a/init/reboot.c
+++ b/init/reboot.c
@@ -28,9 +28,9 @@
 {
 #ifdef BB_FEATURE_LINUXRC
 	/* don't assume init's pid == 1 */
-	exit(kill(*(findPidByName("init")), SIGINT));
+	return(kill(*(findPidByName("init")), SIGINT));
 #else
-	exit(kill(1, SIGINT));
+	return(kill(1, SIGINT));
 #endif
 }