From ebece422fb8a7410beeae0b1830a0102e2f3208b Mon Sep 17 00:00:00 2001
From: Vladimir Krivosheev <vladimir.krivosheev@jetbrains.com>
Date: Tue, 13 May 2014 13:27:52 +0200
Subject: [PATCH] WEB-11680 chrome debugger doesn't start due to internal
 exceptions

---
 .../com/intellij/xdebugger/impl/XDebugSessionImpl.java    | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebugSessionImpl.java b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebugSessionImpl.java
index bd5c15ef3c1f..8bc2360775f7 100644
--- a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebugSessionImpl.java
+++ b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebugSessionImpl.java
@@ -801,8 +801,12 @@ public class XDebugSessionImpl implements XDebugSession {
     myDebuggerManager.setActiveSession(this, null, false, null);
     if (breakpointsInitialized) {
       XBreakpointManagerImpl breakpointManager = myDebuggerManager.getBreakpointManager();
-      breakpointManager.removeBreakpointListener(myBreakpointListener);
-      breakpointManager.getDependentBreakpointManager().removeListener(myDependentBreakpointListener);
+      if (myBreakpointListener != null) {
+        breakpointManager.removeBreakpointListener(myBreakpointListener);
+      }
+      if (myDependentBreakpointListener != null) {
+        breakpointManager.getDependentBreakpointManager().removeListener(myDependentBreakpointListener);
+      }
     }
     myStopped = true;
     myDebuggerManager.removeSession(this);