fix profile key crash & typo

SessionMessagingKit/Sending & Receiving/MessageReceiver+Handling.swift

@@ -189,10 +189,10 @@ extension MessageReceiver {
         let storage = SNMessagingKitConfiguration.shared.storage
         let transaction = transaction as! YapDatabaseReadWriteTransaction
         // Profile
-        var userProfileKy: OWSAES256Key? = nil
-        if let profileKey = message.profileKey { userProfileKy = OWSAES256Key(data: profileKey) }
+        var userProfileKey: OWSAES256Key? = nil
+        if let profileKey = message.profileKey { userProfileKey = OWSAES256Key(data: profileKey) }
         updateProfileIfNeeded(publicKey: userPublicKey, name: message.displayName, profilePictureURL: message.profilePictureURL,
-            profileKey: userProfileKy, sentTimestamp: message.sentTimestamp!, transaction: transaction)
+            profileKey: userProfileKey, sentTimestamp: message.sentTimestamp!, transaction: transaction)
         // Initial configuration sync
         if !UserDefaults.standard[.hasSyncedInitialConfiguration] {
             UserDefaults.standard[.hasSyncedInitialConfiguration] = true
@@ -280,8 +280,10 @@ extension MessageReceiver {
         // Update profile if needed
         if let profile = message.profile {
             let sessionID = message.sender!
+            var contactProfileKey: OWSAES256Key? = nil
+            if let profileKey = profile.profileKey { contactProfileKey = OWSAES256Key(data: profileKey) }
             updateProfileIfNeeded(publicKey: sessionID, name: profile.displayName, profilePictureURL: profile.profilePictureURL,
-                profileKey: given(profile.profileKey) { OWSAES256Key(data: $0)! }, sentTimestamp: message.sentTimestamp!, transaction: transaction)
+                profileKey: contactProfileKey, sentTimestamp: message.sentTimestamp!, transaction: transaction)
         }
         // Get or create thread
         guard let threadID = storage.getOrCreateThread(for: message.syncTarget ?? message.sender!, groupPublicKey: message.groupPublicKey, openGroupID: openGroupID, using: transaction) else { throw Error.noThread }