useradd: respect -r flag when allocating subuids

We intend to not create subuids for system users. However we are
checking for command line flags after we check whether -r flag
was set, so it was never found to be true.  Fix that.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

src/useradd.c

@@ -2026,6 +2026,9 @@ int main (int argc, char **argv)
 #ifdef SHADOWGRP
 	is_shadow_grp = sgr_file_present ();
 #endif
+
+	process_flags (argc, argv);
+
 #ifdef ENABLE_SUBIDS
 	is_sub_uid = sub_uid_file_present () && !rflg &&
 	    (!user_id || (user_id <= uid_max && user_id >= uid_min));
@@ -2035,8 +2038,6 @@ int main (int argc, char **argv)
 
 	get_defaults ();
 
-	process_flags (argc, argv);
-
 #ifdef ACCT_TOOLS_SETUID
 #ifdef USE_PAM
 	{