This constructor can return nil

seeing frequent crash in the wild on this line, maybe this is why?

// FREEBIE

Signal/src/call/OutboundCallInitiator.swift

@@ -52,7 +52,8 @@ import Foundation
      */
     public func initiateCall(handle: String) -> Bool {
         Logger.info("\(TAG) in \(#function) with handle: \(handle)")
-        guard let recipientId = PhoneNumber(fromUserSpecifiedText: handle).toE164() else {
+
+        guard let recipientId = PhoneNumber(fromUserSpecifiedText: handle)?.toE164() else {
             Logger.warn("\(TAG) unable to parse signalId from phone number: \(handle)")
             return false
         }