Fix variable declaration for character iteration

Author: cywong-dev

Sprint-3/2-practice-tdd/count.js

@@ -1,6 +1,6 @@
 function countChar(stringOfCharacters, findCharacter) {
     let count = 0;
-    let char = "";
+
     for (let char of stringOfCharacters) {
         if (char === findCharacter) {
             count++;