bugfix crash

Author: Arief Nur Putranto

QiscusCore.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
 s.name         = "QiscusCore"
-s.version      = "1.13.6"
+s.version      = "1.13.7"
 s.summary      = "Qiscus Core SDK for iOS"
 s.description  = <<-DESC
 Qiscus SDK for iOS contains Qiscus public Model.
@@ -14,7 +14,7 @@ s.source_files  = "QiscusCore", "Source/QiscusCore/**/*.{h,m,swift,xib}"
 s.resource_bundles = {
     'QiscusCore' => ['Source/QiscusCore/**/*.{lproj,xib,xcassets,imageset,png,xcdatamodeld,xcdatamodel}']
 }
-s.platform      = :ios, "10.0"
+s.platform      = :ios, "11.0"
 s.ios.frameworks = ["UIKit", "QuartzCore", "CFNetwork", "Security", "Foundation", "MobileCoreServices", "CoreData"]
 s.dependency 'QiscusRealtime', '1.7.0'
 s.dependency 'SwiftyJSON'

Source/QiscusCore/Database/CommentStorage.swift

@@ -189,11 +189,13 @@ class CommentStorage : QiscusStorage {
 
     // update/replace === identical object
     private func updateCommentDataEvent(old: CommentModel, new: CommentModel) -> Bool{
-        if let index = data.index(where: { $0 === old }) {
-            data[index] = new
-            return true
-        }else {
-            return false
+        DispatchQueue.global(qos: .background).sync {
+            if let index = data.index(where: { $0 === old }) {
+                data[index] = new
+                return true
+            }else {
+                return false
+            }
         }
     }
 

Source/QiscusCore/QiscusCore.swift

@@ -10,7 +10,7 @@ import Foundation
 import UIKit
 
 public class QiscusCore: NSObject {
-    public static let qiscusCoreVersionNumber:String = "1.13.6"
+    public static let qiscusCoreVersionNumber:String = "1.13.7"
     class var bundle:Bundle{
         get{
             let podBundle = Bundle(for: QiscusCore.self)

Source/QiscusCore/QiscusWorkerManager.swift

@@ -196,7 +196,7 @@ class QiscusWorkerManager {
     }
 
     private func pending() {
-        DispatchQueue.global(qos: .background).async {
+        DispatchQueue.global(qos: .background).sync {
             self.sendPendingMessage()
         }
     }

Source/QiscusCore/Realtime/RealtimeManager.swift

@@ -710,7 +710,9 @@ class RealtimeManager {
         if let commentDB = QiscusCore.database.comment.find(id: comment.roomId){
             //ignored for status sent from my self / after postComment
         }else{
-            QiscusCore.database.comment.save([comment])
+            DispatchQueue.global(qos: .background).sync {
+                QiscusCore.database.comment.save([comment])
+            }
         }