When running grubby on RHEL 6 with a "title" line commented out grubby segfaults.

Issue

• When running grubby directly, or during yum update on a kernel, grubby segfaults if the grub.conf has a title entry that is commented out:

[root@localhost ~]# grubby --add-kernel=/boot/vmlinuz-2.6.32-754.el6.x86_64 --title=workaround-title --initrd=/boot/initramfs-2.6.32-754.el6.x86_64.img --args 'root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup/lv_root  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet' 
grubby recieved SIGSEGV!  Backtrace (6):
grubby[0x40815f]
/lib64/libc.so.6[0x3324832510]
grubby[0x4028ec]
grubby[0x407c58]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x332481ed1d]
grubby[0x401709]

[root@localhost ~]# cat /boot/grub/grub.conf 
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=1
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
#title reproducer-title
    kernel /vmlinuz-2.6.32-754.el6.x86_64 root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
    initrd /initramfs-2.6.32-754.el6.x86_64.img
title Red Hat Enterprise Linux 6 (2.6.32-754.el6.x86_64)
    root (hd0,0)
    kernel /vmlinuz-2.6.32-754.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup/lv_root  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
    initrd /initramfs-2.6.32-754.el6.x86_64.img