Fix: Checking if we have args before testing them

Was using ".indexOf" without testing wether we had args or not which could throw error

+ easier formatting for better understanding

lib/youtube-dl.js

@@ -239,9 +239,8 @@ ytdl.exec = function exec(url, args, options, callback) {
  */
 function parseInfo(data) {
  // Youtube-dl might return just an url as a string when using the "-g" or "--get-url" flag
- if (typeof data === "string")
- if (data.startsWith("http"))
- data = JSON.stringify({url: data})
+ if (typeof data === "string" && data.startsWith("http"))
+ data = JSON.stringify({url: data});
 
  const info = JSON.parse(data);
 
@@ -323,10 +322,9 @@ ytdl.getInfo = function getInfo(url, args, options, callback) {
 
  // If using the "-g" or "--get-url" flag youtube-dl will return just a string (the URL to the video) which messes up the parsing
  // This fixes this behaviour
- if (args.indexOf('-g') > -1 || args.indexOf('--get-url') > -1 )
- if (Array.isArray(data))
- if(data.length >= 2)
- data.splice(0, 1)
+ if (args && (args.indexOf("-g") > -1 || args.indexOf("--get-url") > -1))
+ if (Array.isArray(data) && data.length >= 2) data.splice(0, 1);
+
 
  try {
  info = data.map(parseInfo);