extent tree (at level 2) could be narrower messages causes shrink_ext to fail

[guysoft]

Log is at: http://os.zynthian.org:8080/job/ZynthianOS/12/console

06:25:34 +++ e2fsck -fy /dev/loop0
06:25:34 e2fsck 1.43.4 (31-Jan-2017)
06:25:35 Pass 1: Checking inodes, blocks, and sizes
06:25:35 Inode 64568 extent tree (at level 2) could be narrower.  Fix? yes
06:25:35 
06:25:35 Pass 1E: Optimizing extent trees
06:25:35 Pass 2: Checking directory structure
06:25:35 Pass 3: Checking directory connectivity
06:25:35 Pass 4: Checking reference counts
06:25:35 Pass 5: Checking group summary information
06:25:35 
06:25:35 rootfs: ***** FILE SYSTEM WAS MODIFIED *****
06:25:35 rootfs: 140045/418064 files (0.3% non-contiguous), 1223815/1727232 blocks
06:25:37 + exit 1
06:25:37 + popd

[guysoft]

This is happening again.