From 8ae0b0cbf8b737a9769d8c301646037901ed5064 Mon Sep 17 00:00:00 2001
From: Johannes Rieken <johannes.rieken@gmail.com>
Date: Fri, 16 Mar 2018 17:07:53 +0100
Subject: [PATCH] fix #45990

---
 src/vs/base/common/cancellation.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/vs/base/common/cancellation.ts b/src/vs/base/common/cancellation.ts
index 233c19fe7d7..6797298bd8b 100644
--- a/src/vs/base/common/cancellation.ts
+++ b/src/vs/base/common/cancellation.ts
@@ -45,6 +45,7 @@ class MutableToken implements CancellationToken {
 			this._isCancelled = true;
 			if (this._emitter) {
 				this._emitter.fire(undefined);
+				this._emitter.dispose();
 				this._emitter = undefined;
 			}
 		}
-- 
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