From 92ff49d782f2a8bf0c99dd7dd37fbb1e83e28d4f Mon Sep 17 00:00:00 2001
From: Dmitry Jemerov <yole@jetbrains.com>
Date: Fri, 24 Feb 2012 11:48:58 +0100
Subject: [PATCH] fix NPE on first layout (IDEA-81813)

---
 .../ui/tabs/impl/singleRow/ScrollableSingleRowLayout.java       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform/platform-api/src/com/intellij/ui/tabs/impl/singleRow/ScrollableSingleRowLayout.java b/platform/platform-api/src/com/intellij/ui/tabs/impl/singleRow/ScrollableSingleRowLayout.java
index 4661611f1f2a..098fe956736a 100644
--- a/platform/platform-api/src/com/intellij/ui/tabs/impl/singleRow/ScrollableSingleRowLayout.java
+++ b/platform/platform-api/src/com/intellij/ui/tabs/impl/singleRow/ScrollableSingleRowLayout.java
@@ -80,7 +80,7 @@ public class ScrollableSingleRowLayout extends SingleRowLayout {
   protected void recomputeToLayout(SingleRowPassInfo data) {
     calculateRequiredLength(data);
     clampScrollOffsetToBounds(data);
-    if (myScrollSelectionInViewPending || !data.layoutSize.equals(myLastSingRowLayout.layoutSize)) {
+    if (myScrollSelectionInViewPending || myLastSingRowLayout == null || !data.layoutSize.equals(myLastSingRowLayout.layoutSize)) {
       myScrollSelectionInViewPending = false;
       doScrollSelectionInView(data);
     }