Catch Missing Open and Closing Parenthesis After a Function Call

When a function or method doesn't take any arguments, you may forget to include the (empty) opening and closing parentheses when calling it. Often times the result of a function call is saved in a variable for other use in your code. This error can be detected by logging variable values (or their types) to the console and seeing that one is set to a function reference, instead of the expected value the function returns.

The variables in the following example are different:

function myFunction() {
  return "You rock!";
}
let varOne = myFunction;
let varTwo = myFunction();

Here varOne is the function myFunction, and varTwo is the string You rock!.

Fix the code so the variable result is set to the value returned from calling the function getNine.