Safe unwrapping of current graphics context when showing reactions

Author: martinmitrevski

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### 🐞 Fixed
 - Channel header sometimes blinks when many messages are sent
 - Data race when channels are updated from message list
+- Safe unwrapping of current graphics context when showing reactions
 
 # [4.20.0](https://github.com/GetStream/stream-chat-swiftui/releases/tag/4.20.0)
 _August 04, 2022_

Sources/StreamChatSwiftUI/ChatChannel/ChatChannelViewModel.swift

@@ -231,8 +231,12 @@ open class ChatChannelViewModel: ObservableObject, MessagesDataSource {
             return
         }
         UIGraphicsBeginImageContext(view.frame.size)
-        view.layer.render(in: UIGraphicsGetCurrentContext()!)
-        currentSnapshot = UIGraphicsGetImageFromCurrentImageContext()
+        if let currentGraphicsContext = UIGraphicsGetCurrentContext() {
+            view.layer.render(in: currentGraphicsContext)
+            currentSnapshot = UIGraphicsGetImageFromCurrentImageContext()
+        } else {
+            currentSnapshot = images.snapshot
+        }
         UIGraphicsEndImageContext()
     }