remove redundant cast

Author: nuclearace

Source/SocketIOClient.swift

@@ -149,7 +149,7 @@ public final class SocketIOClient : NSObject, SocketEngineClient, SocketParsable
 
         guard timeoutAfter != 0 else { return }
 
-        let time = DispatchTime.now() + Double(Int64(timeoutAfter) * Int64(NSEC_PER_SEC)) / Double(NSEC_PER_SEC)
+        let time = DispatchTime.now() + Double(UInt64(timeoutAfter) * NSEC_PER_SEC) / Double(NSEC_PER_SEC)
 
         handleQueue.asyncAfter(deadline: time) {[weak self] in
             guard let this = self, this.status != .connected && this.status != .disconnected else { return }