don't need to call predacessor

Author: nuclearace

SocketIOClientSwift/SocketParser.swift

@@ -98,7 +98,7 @@ class SocketParser {
             }
         }
 
-        let d = message[parser.currentIndex.advancedBy(1)...message.endIndex.predecessor()]
+        let d = message[parser.currentIndex.advancedBy(1)..<message.endIndex]
         let noPlaceholders = d["(\\{\"_placeholder\":true,\"num\":(\\d*)\\})"] ~= "\"~~$2\""
         let data = parseData(noPlaceholders) as? [AnyObject] ?? [noPlaceholders]
 

SocketIOClientSwift/SocketStringReader.swift

@@ -53,7 +53,7 @@ struct SocketStringReader {
         let range = Range<String.Index>(start: currentIndex, end: message.endIndex)
         let subString = message.substringWithRange(range)
         guard let foundRange = subString.rangeOfString(string) else {
-            let restOfString = message[currentIndex...message.endIndex.predecessor()]
+            let restOfString = message[currentIndex..<message.endIndex]
             currentIndex = message.endIndex
 
             return restOfString