stop warning on autoheader 2.13

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@433 f882894a-f735-0410-b71e-b25c423dba1c

lib/ls-mntd-fs.m4

@@ -129,7 +129,7 @@ if test -z "$ac_list_mounted_fs"; then
     AC_DEFINE(MOUNTED_VMOUNT, 1,
 	[Define if there is a function named mntctl that can be used to read
    the list of mounted filesystems, and there is a system header file
-   that declares `struct vmount.'  (AIX)])
+   that declares struct vmount.  (AIX)])
   fi
 fi