growpart can't resize partition with two digits

Release version
=====================
lsb_release -rd
Description: Ubuntu 14.04.3 LTS
Release: 14.04

package version
=====================
apt-cache policy cloud-utils
cloud-utils:
  Installed: 0.27-0ubuntu9.1
  Candidate: 0.27-0ubuntu9.1
  Version table:
 *** 0.27-0ubuntu9.1 0
        500 http://MIRROR/ubuntu/ trusty-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     0.27-0ubuntu9 0
        500 http://MIRROR/ubuntu/ trusty/main amd64 Packages

behavior
=====================
growpart -v /dev/sda 10
update-partition set to true
found MBR partition table (id = 83)
geometry is -C 48561 -H 255 -S 63. total size=780132465
## sfdisk -C 48561 -H 255 -S 63 --unit=S --dump /dev/sda
# partition table of /dev/sda
unit: sectors

/dev/sda1 : start= 2048, size= 20973568, Id=83, bootable
/dev/sda2 : start= 20975616, size= 133120, Id=83
/dev/sda3 : start= 21110782, size=759021683, Id= 5
/dev/sda4 : start= 0, size= 0, Id= 0
/dev/sda5 : start= 21110784, size= 2107392, Id=83
/dev/sda6 : start= 23220224, size= 41951232, Id=83
/dev/sda7 : start= 65173504, size= 2107392, Id=83
/dev/sda8 : start= 67282944, size= 2107392, Id=83
/dev/sda9 : start= 69392384, size= 31248384, Id=82
/dev/sda10: start=100642816, size= 5851136, Id=83

FAILED: failed to get start and end for /dev/sda10 in /dev/sda

Looks like because of no space between '/dev/sda10' and ':' parsing doesn't work

Expected behavior
=====================
Extending partition without errors