Fixes Unclosed json array stack overflow

[johnjaylward]

Key Changes:

• Adds check for EOF in array parsing

What problem does this code solve?
Fixes #372.

Risks
None. This is a bug fix and no functionality is changed.

Changes to the API?
none

Will this require a new release?
No. This bug fix only changes what exception is thrown in a syntax error. It does not change parsing of valid documents.

Should the documentation be updated?
No

Does it break the unit tests?
No. All unit tests should pass. New unit tests were created to verify the correct behavior. see stleary/JSON-Java-unit-test#80

Was any code refactored in this commit?
no

Review status
ACCEPTED Starting 3 day comment window

[johnjaylward]

rebased against master

[stleary]

How did a non-cyclical stackoverflow stay hidden in the code all these years? @agouz Thanks for catching this, and @johnjaylward thanks for the fix. Starting 3 day window.

[johnjaylward]

@stleary WTH was I thinking:

throw new JSONException(x.syntaxError("Expected a ',' or ']'"));

... that's wrong. should be:

throw x.syntaxError("Expected a ',' or ']'");