From b1e891055c5e4a175e7550e046474a8d19e2b0ab Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Mon, 28 Feb 2011 08:45:03 -0500
Subject: [PATCH] In NetworkCallbackController::Unschedule*Stream(), don't
 proceed if the streams are NULL.

---
 CHANGES                             | 1 +
 Source/NetworkCallbackController.mm | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/CHANGES b/CHANGES
index 226579d..c4d3ab9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -11,6 +11,7 @@ MacGDBp                                                               CHANGE LOG
 1.4.1
 #####################
 - Fix: Objects with nested objects wouldn't always load their child keys
+- Fix: #213  Crash when unchecking "Attached" when the debugger is inactive
 
 
 1.4 Beta 2
diff --git a/Source/NetworkCallbackController.mm b/Source/NetworkCallbackController.mm
index 73c032a..a9c4cb3 100644
--- a/Source/NetworkCallbackController.mm
+++ b/Source/NetworkCallbackController.mm
@@ -213,6 +213,8 @@ void NetworkCallbackController::OnWriteStreamEvent(CFWriteStreamRef stream,
 
 void NetworkCallbackController::UnscheduleReadStream()
 {
+  if (!connection_.readStream)
+    return;
   CFReadStreamUnscheduleFromRunLoop(connection_.readStream, runLoop_, kCFRunLoopCommonModes);
   CFReadStreamClose(connection_.readStream);
   CFRelease(connection_.readStream);    
@@ -221,6 +223,8 @@ void NetworkCallbackController::UnscheduleReadStream()
 
 void NetworkCallbackController::UnscheduleWriteStream()
 {
+  if (!connection_.writeStream)
+    return;
   CFWriteStreamUnscheduleFromRunLoop(connection_.writeStream, runLoop_, kCFRunLoopCommonModes);
   CFWriteStreamClose(connection_.writeStream);
   CFRelease(connection_.writeStream);
-- 
2.22.5