From 4942f5304a349af99a2512966c332d033a0beb4c Mon Sep 17 00:00:00 2001
From: Brian Wilkerson <brianwilkerson@google.com>
Date: Fri, 14 Oct 2016 12:31:11 -0700
Subject: [PATCH] Guard against a hypothetical null pointer dereference

R=scheglov@google.com

Review URL: https://codereview.chromium.org/2421473007 .
---
 pkg/analysis_server/lib/src/status/memory_use.dart | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkg/analysis_server/lib/src/status/memory_use.dart b/pkg/analysis_server/lib/src/status/memory_use.dart
index 92657bcdc04..8f68b0f37bd 100644
--- a/pkg/analysis_server/lib/src/status/memory_use.dart
+++ b/pkg/analysis_server/lib/src/status/memory_use.dart
@@ -225,8 +225,10 @@ class MemoryUseData {
     DartSdkManager manager = server.sdkManager;
     List<SdkDescription> descriptors = manager.sdkDescriptors;
     for (SdkDescription descriptor in descriptors) {
-      _processAnalysisContext(
-          manager.getSdk(descriptor, () => null).context, manager);
+      DartSdk sdk = manager.getSdk(descriptor, () => null);
+      if (sdk != null) {
+        _processAnalysisContext(sdk.context, manager);
+      }
     }
   }