eslint-plugin-react-hooks version: 4.2.0

## Steps To Reproduce

I know it shouldn't exist in production code, but it's annoying while editing some files.

```js
import React, { useEffect } from "react";

const App = () => {
  useEffect(); // <-
  return null;
};

export default App;
```

Link to code example: https://codesandbox.io/s/polished-sun-3wr27?file=/src/App.js

## The current behavior

ESLint crashed.

```
TypeError: Cannot read property 'type' of undefined
```

## The expected behavior

ESLint doesn't crash but reports an error instead.
`Did you mean to include ${declaredDependencyNode.value} in the array instead?`,
                  });
                } else {
                  reportProblem({
                    node: declaredDependencyNode,
                    message:
                      `The ${declaredDependencyNode.raw} literal is not a valid dependency ` +
                      'because it never changes. You can safely remove it.',
                  });
                }
              } else {
                reportProblem({
                  node: declaredDependencyNode,
                  message:
                    `React Hook ${context.getSource(reactiveHook)} has a ` +
                    `complex expression in the dependency array. ` +
                    'Extract it to a separate variable so it can be statically checked.',
                });
              }
              return;
            } else {
              throw error;
            }
          }
          let maybeID = declaredDependencyNode;
          while (
            maybeID.type === 'MemberExpression' ||
            maybeID.type === 'OptionalMemberExpression' ||
            maybeID.type === 'ChainExpression'
          ) {