Kustomize diff viewer does not diff the correct two yaml files

[emosbaugh]

Expected behavior

Kustomize diff viewer should diff the correct two yaml files.

Actual behavior

When you select the second of the two diffs it will diff the wrong two.

Information

• Ship version: 0.52.0
• Docker version: 19.03.5
• Command line run: ship init

Steps to reproduce the behavior

1. Use the integration/kustomize-overlay ship yaml here
2. Run ship init
3. Click a file and enter text to create two kustomize patches
4. Click on the second of the two overlays. Observe the diff.