From be66db898c1fdbc6c524664b942abc9b8baa4f8e Mon Sep 17 00:00:00 2001
From: Greyson Parrelli <greyson@signal.org>
Date: Sat, 2 Feb 2019 10:09:38 -0800
Subject: [PATCH] Fix possible double-cancel in CallRequestController.

---
 src/org/thoughtcrime/securesms/net/CallRequestController.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/org/thoughtcrime/securesms/net/CallRequestController.java b/src/org/thoughtcrime/securesms/net/CallRequestController.java
index f1f82ea1e7..e3a3e1c665 100644
--- a/src/org/thoughtcrime/securesms/net/CallRequestController.java
+++ b/src/org/thoughtcrime/securesms/net/CallRequestController.java
@@ -26,6 +26,8 @@ public class CallRequestController implements RequestController {
   public void cancel() {
     AsyncTask.THREAD_POOL_EXECUTOR.execute(() -> {
       synchronized (CallRequestController.this) {
+        if (canceled) return;
+        
         call.cancel();
 
         if (stream != null) {