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.
return fixer.insertTextAfter(
                    node,
                    `, [${suggestedDependencies.join(', ')}]`,
                  );
                },
              },
            ],
          });
        }
        return;
      }
      const declaredDependencies = [];
      const externalDependencies = new Set();
      if (declaredDependenciesNode.type !== 'ArrayExpression') {
        
        
        
        reportProblem({
          node: declaredDependenciesNode,
          message:
            `React Hook ${context.getSource(reactiveHook)} was passed a ` +
            'dependency list that is not an array literal. This means we ' +
            "can't statically verify whether you've passed the correct " +
            'dependencies.',
        });
      } else {
        declaredDependenciesNode.elements.forEach(declaredDependencyNode => {
          
          if (declaredDependencyNode === null) {
            return;