Merge "Fix memory/resource handling in imgdiff.cpp, using unique_ptr and vector."
am: a8850710e5

* commit 'a8850710e588e7c6c0003066bae6edd426558059':
  Fix memory/resource handling in imgdiff.cpp, using unique_ptr and vector.

Change-Id: I8363d2f5adbabc5c4a43d23aa7c2e6979ffd1bb5