fixed messages of argument isn't numeric in addition at fs.pm in lines 650 and 684

Changes

@@ -4,6 +4,12 @@
 - Fixed regexp that prevented collecting LOADPCT and ITEMP values in 'apcupsd'
   module.
 	(thanks to Patrick Fallberg, patrick AT fallberg.net)
+- Fixed to show the filesystem name when Monitorix is unable to detect its
+  device name.
+- Fixed messages of argument isn't numeric in addition at fs.pm in lines 650 and
+  684. This happened if one of the filesystems defined is not a real mount
+  point with an associated device name.
+	(thanks to Andreas Itzchak Rehberg, izzy AT qumran.org for pointing this out)
 
 
 3.5.1  - 06-May-2014

lib/fs.pm

@@ -623,6 +623,7 @@ sub fs_update {
 				$use = ($used * 100) / ($used + $free) unless $used + $free == 0;
 			} elsif($f) {
 				my $pid;
+				@tmp = (0) x 10;
 				eval {
 					local $SIG{'ALRM'} = sub {
 						if($pid) {