server session CHANGE do not use bzero

... as it is considered deprecated on some platforms.
Fixes #221
diff --git a/src/session_server.c b/src/session_server.c
index 38f2819..763fcf4 100644
--- a/src/session_server.c
+++ b/src/session_server.c
@@ -228,7 +228,7 @@
         goto fail;
     }
 
-    bzero(&saddr, sizeof(struct sockaddr_storage));
+    memset(&saddr, 0, sizeof(struct sockaddr_storage));
     if (is_ipv4) {
         saddr4 = (struct sockaddr_in *)&saddr;