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.
`only one argument. Did you forget to pass an array of ` +
              `dependencies?`,
          });
        }
        return;
      }
      switch (callback.type) {
        case 'FunctionExpression':
        case 'ArrowFunctionExpression':
          visitFunctionWithDependencies(
            callback,
            declaredDependenciesNode,
            reactiveHook,
            reactiveHookName,
            isEffect,
          );
          return; 
        case 'Identifier':
          if (!declaredDependenciesNode) {
            
            return; 
          }
          
          
          if (
            declaredDependenciesNode.elements &&
            declaredDependenciesNode.elements.some(
              el => el && el.type === 'Identifier' && el.name === callback.name,
            )
          ) {