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.
getConstructionExpressionType(node.left) != null ||
        getConstructionExpressionType(node.right) != null
      ) {
        return 'logical expression';
      }
      return null;
    case 'JSXFragment':
      return 'JSX fragment';
    case 'JSXElement':
      return 'JSX element';
    case 'AssignmentExpression':
      if (getConstructionExpressionType(node.right) != null) {
        return 'assignment expression';
      }
      return null;
    case 'NewExpression':
      return 'object construction';
    case 'Literal':
      if (node.value instanceof RegExp) {
        return 'regular expression';
      }
      return null;
    case 'TypeCastExpression':
      return getConstructionExpressionType(node.expression);
    case 'TSAsExpression':
      return getConstructionExpressionType(node.expression);
  }
  return null;
}
function scanForConstructions({