[monitoring-plugins] Fix regexp for nullmailer "mailq" output

[Stephane Lapie]

 Module: monitoring-plugins
 Branch: master
 Commit: 541322969e27b07566c55448d749bc64ab7ae5c0
 Author: Stephane Lapie <stephane.lapie at asahinet.com>
   Date: Wed Jun  7 15:12:53 2017 +0900
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=5413229

Fix regexp for nullmailer "mailq" output

As it currently is, the regular expression does not match mailq command
output on a Debian Jessie setup.

Three erroneous behaviors fixed :
- Meaningful lines do not end with the "bytes" word
- There might be one or more space before the byte count, not 2
- Time match was completely broken, it only accounted for 0-29 minutes
and 0-29 seconds.

---

 plugins-scripts/check_mailq.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins-scripts/check_mailq.pl b/plugins-scripts/check_mailq.pl
index 32f498d..1fc15ff 100755
--- a/plugins-scripts/check_mailq.pl
+++ b/plugins-scripts/check_mailq.pl
@@ -533,7 +533,7 @@ elsif ( $mailq eq "nullmailer" ) {
 	while (<MAILQ>) {
 	    #2006-06-22 16:00:00  282 bytes
 
-	    if (/^[1-9][0-9]*-[01][0-9]-[0-3][0-9]\s[0-2][0-9]\:[0-2][0-9]\:[0-2][0-9]\s{2}[0-9]+\sbytes$/) {
+	    if (/^[1-9][0-9]*-[01][0-9]-[0-3][0-9]\s[0-2][0-9]\:[0-5][0-9]\:[0-5][0-9]\s+[0-9]+\sbytes/) {
 		$msg_q++ ;
 	    }
 	}