Re-instate the chroot by default code.

Index: conv.c
--- conv.c.orig
+++ conv.c
@@ -289,7 +289,9 @@ daemonize_finish(void)
  * For security, chroot (optionally) and drop privileges.
  * Pass a NULL chroot_dir to disable chroot() behaviour.
  */
-void privdrop(const char *chroot_dir, const char *privdrop_user) {
+void
+privdrop(const char *chroot_dir, const char *privdrop_user)
+{
    struct passwd *pw;
 
    errno = 0;
@@ -301,9 +303,7 @@ void privdrop(const char *chroot_dir, const char *priv
       else
          err(1, "getpwnam(\"%s\") failed", privdrop_user);
    }
-   if (chroot_dir == NULL) {
-      verbosef("no --chroot dir specified, darkstat will not chroot()");
-   } else {
+   if (chroot_dir != NULL) {
       tzset(); /* read /etc/localtime before we chroot */
       if (chdir(chroot_dir) == -1)
          err(1, "chdir(\"%s\") failed", chroot_dir);