refactor split time parsing

Author: theScrabi

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/linkHandler/YoutubeParsingHelper.java

@@ -31,20 +31,16 @@ private YoutubeParsingHelper() {
     public static long parseDurationString(String input)
             throws ParsingException, NumberFormatException {
 
-        String[] splitInput;
-
         // If time separator : is not detected, try . instead
-        
-        if (input.contains(":")) {
-        splitInput = input.split(":");
-        } else {
-        splitInput = input.split("\\.");
-        }
-        
+
+        final String[] splitInput = input.contains(":")
+                ? input.split(":")
+                : input.split("\\.");
+
         String days = "0";
         String hours = "0";
         String minutes = "0";
-        String seconds;
+        final String seconds;
 
         switch (splitInput.length) {
             case 4: