tree d50aa2aee0a20525591f24804e97b31bba2a2ec4
parent ab09a1764b8993191107e8d7b0ffc4c142702589
author Yifan Hong <elsk@google.com> 1569376680 -0700
committer Yifan Hong <elsk@google.com> 1569450050 -0700

libsnapshot: refactor CreateUpdateSnapshots

This function is too big. Refactor it a bit.

- Reorder checks / variable initializations a bit.
  They are independent of each other, so they can be
  safely reordered.
- Put snapshot creation and initialization to their own
  functions so that CreateUpdateSnapshots looks shorter.

Test: libsnapshot_test
Change-Id: I135b415d8e046dd91d31326fe7962ae44be4ccf8