fix(ios): Fix app halt when an audio ends w/ another playing

[liruqi]

trafficstars

Platforms affected

iOS 9

What does this PR do?

Fix app halt when an audio ends with another playing

What testing has been done on this change?

My T-Rex runner for iOS based on https://github.com/riccardo-forina/chromium-dyno-crossbrowser

Checklist

• [x] ICLA has been signed and submitted to [email protected].
• [ ] Reported an issue in the JIRA database
• [ ] Commit message follows the format: "CB-3232: (android) Fix bug with resolving file paths", where CB-xxxx is the JIRA ID & "android" is the platform affected.
• [ ] Added automated test coverage as appropriate for this change.

[cordova-qa]

Cordova CI Build has completed successfully.

Commit - Link Dashboard - Link

Builder Name	Console Output	Test Report	Device Logs
Windows 8.1 Store	Link	Link	Link
Windows 10 Store	Link	Link	Link
Windows 8.1 Phone	Link	Link	Link
iOS	Link	Link	Link
Android	Link	Link	Link

[janpio]

Hey @liruqi, can you explain what exact behavior this changes? How was it before, how is it now? Also, there seems to be a conflict now - could you take a look and maybe resolve it? Thanks.