"Cannot read property 'type' of undefined" when updating to version 4.14.0

[bary12]

Tell us about your environment

• ESLint Version: 4.14.0, The error did not occur in 4.13.1
• Node Version: 6.10.4
• npm Version: 5.5.1

What parser (default, Babel-ESLint, etc.) are you using?
babel-eslint

Please show your full configuration:

See eslint-config-canonical

Configuration

{
  "extends": "canonical",
  "root": true,
  "rules": {
    "filenames/match-regex": 0
  }
}

What did you do? Please include the actual source code causing the issue, as well as the command that you used to run ESLint.

This was caused by a certain file, I don't know which part of the file, but the problem seems to be there. See the source code of the file.

./node_modules/.bin/eslint ./src ./test

This seems to have happened in particular on the file mentioned above,

./node_modules/.bin/eslint ./src/rules/checkParamNames.js

What actually happened? Please include the actual, raw output from ESLint.
ESlint crashed with the following error:

Cannot read property 'type' of undefined
TypeError: Cannot read property 'type' of undefined
    at isForInRef (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/rules/no-unused-vars.js:410:24)
    at variable.references.some.ref (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/rules/no-unused-vars.js:447:21)
    at Array.some (<anonymous>)
    at isUsedVariable (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/rules/no-unused-vars.js:446:40)
    at collectUnusedVariables (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/rules/no-unused-vars.js:569:26)
    at Program:exit (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/rules/no-unused-vars.js:621:36)
    at listeners.(anonymous function).forEach.listener (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/util/safe-emitter.js:47:58)
    at Array.forEach (<anonymous>)
    at Object.emit (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/util/safe-emitter.js:47:38)
    at NodeEventGenerator.applySelector (/home/travis/build/gajus/eslint-plugin-jsdoc/node_modules/eslint/lib/util/node-event-generator.js:251:26)

Note that here eslint-plugin-jsdoc is the repository being linted.

This did not occur with eslint@4.7.2

EDIT: Now also checked with version 4.13.1 and the error does not occur. Seems to be a problem specifically with 4.14.0

[bary12]

Duplicate of #9767, #9762