Fix missing paranthesis (#228)

Author: rehandalal

packages/react-app-rewired/index.js

@@ -5,19 +5,19 @@ const loaderNameMatches = function(rule, loader_name) {
   return rule && rule.loader && typeof rule.loader === 'string' &&
     (rule.loader.indexOf(`${path.sep}${loader_name}${path.sep}`) !== -1 ||
     rule.loader.indexOf(`@${loader_name}${path.sep}`) !== -1);
-}
+};
 
 const babelLoaderMatcher = function(rule) {
   return loaderNameMatches(rule, 'babel-loader');
 };
 
 const getLoader = function(rules, matcher) {
-  var loader;
+  let loader;
 
   rules.some(rule => {
     return (loader = matcher(rule)
       ? rule
-      : getLoader(rule.use || rule.oneOf || (Array.isArray(rule.loader) && rule.loader) || [], matcher);
+      : getLoader(rule.use || rule.oneOf || (Array.isArray(rule.loader) && rule.loader) || [], matcher));
   });
 
   return loader;