Fix filename expansion in vsftpd_conf_migrate.sh ... again

We need to run 'shopt -s nullglob', otherwise the glob pattern
will expand to itself if no matching files exist.

vsftpd.spec

@@ -2,7 +2,7 @@
 
 Name:    vsftpd
 Version: 3.0.3
-Release: 23%{?dist}
+Release: 24%{?dist}
 Summary: Very Secure Ftp Daemon
 
 Group:    System Environment/Daemons
@@ -153,6 +153,9 @@ mkdir -p $RPM_BUILD_ROOT/%{_var}/ftp/pub
 %{_var}/ftp
 
 %changelog
+* Fri Jun 01 2018 Ondřej Lysoněk <olysonek@redhat.com> - 3.0.3-24
+- Fix filename expansion in vsftpd_conf_migrate.sh ... again
+
 * Thu May 10 2018 Ondřej Lysoněk <olysonek@redhat.com> - 3.0.3-23
 - Fix issues found by Coverity Scan
 

vsftpd_conf_migrate.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 #move old config files and symlink them
 #shipped with vsftpd-2.0.1-6
+shopt -s nullglob
 PREFIX="vsftpd"
 for file in /etc/${PREFIX}.*; do
     if [ ! -L $file ]; then