From 68639a9347f5612277177b09dc2d9d73f4e06f60 Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Wed, 10 Jul 2024 07:43:38 +0200
Subject: [PATCH] Clean up control flow in WaitableEvent.

---
 ipc/chromium/src/base/waitable_event_posix.cc | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/ipc/chromium/src/base/waitable_event_posix.cc b/ipc/chromium/src/base/waitable_event_posix.cc
index 149d513a62..1768e82026 100644
--- a/ipc/chromium/src/base/waitable_event_posix.cc
+++ b/ipc/chromium/src/base/waitable_event_posix.cc
@@ -90,15 +90,14 @@ class SyncWaiter : public WaitableEvent::Waiter {
   }
 
   bool Fire(WaitableEvent *signaling_event) {
-    lock_->Acquire();
-      const bool previous_value = fired_;
-      fired_ = true;
-      if (!previous_value)
-        signaling_event_ = signaling_event;
-    lock_->Release();
+    AutoLock locked(*lock_);
 
-    if (previous_value)
+    if (fired_) {
       return false;
+    }
+
+    fired_ = true;
+    signaling_event_ = signaling_event;
 
     cv_->Broadcast();