From b4e5c86a1212c4747e9cc2c0a7a63a10cb04a18d Mon Sep 17 00:00:00 2001
From: Kirill Kalishev <kirill.kalishev@jetbrains.com>
Date: Tue, 27 Jul 2010 17:10:42 +0400
Subject: [PATCH] NPE with BusyObject with weak amp of requestors

---
 .../src/com/intellij/openapi/util/BusyObject.java             | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/platform/platform-api/src/com/intellij/openapi/util/BusyObject.java b/platform/platform-api/src/com/intellij/openapi/util/BusyObject.java
index d7a6499d2e3e..2849a09e1812 100644
--- a/platform/platform-api/src/com/intellij/openapi/util/BusyObject.java
+++ b/platform/platform-api/src/com/intellij/openapi/util/BusyObject.java
@@ -32,7 +32,9 @@ public interface BusyObject {
     public final void onReady() {
       ActionCallback[] ready = getReadyCallbacks(true);
       for (ActionCallback each : ready) {
-        each.setDone();
+        if (each != null) {
+          each.setDone();
+        }
       }
     }