Bug 565179 - Exception processing async thread queue gives NPE while
evaluating ConditionalBreakpoint

Change-Id: Ie4634c1b115f2ca440df626ee35c4c47a7ee058e

org.eclipse.jdt.debug/model/org/eclipse/jdt/internal/debug/core/breakpoints/ConditionalBreakpointHandler.java

diff --git a/org.eclipse.jdt.debug/model/org/eclipse/jdt/internal/debug/core/breakpoints/ConditionalBreakpointHandler.java b/org.eclipse.jdt.debug/model/org/eclipse/jdt/internal/debug/core/breakpoints/ConditionalBreakpointHandler.java
index 79e66c0..57a1473 100644
--- a/org.eclipse.jdt.debug/model/org/eclipse/jdt/internal/debug/core/breakpoints/ConditionalBreakpointHandler.java
+++ b/org.eclipse.jdt.debug/model/org/eclipse/jdt/internal/debug/core/breakpoints/ConditionalBreakpointHandler.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2009, 2017 IBM Corporation and others.
+ * Copyright (c) 2009, 2020 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -107,6 +107,9 @@
 			JDIThread thread = (JDIThread) result.getThread();
 			if (result.hasErrors()) {
 				DebugException exception = result.getException();
+				if (exception == null) {
+					return DONT_SUSPEND;
+				}
 				Throwable wrappedException = exception.getStatus()
 						.getException();
 				if (wrappedException instanceof VMDisconnectedException) {