From ca75131f064dfed685dffaade0f1e39e464f4df6 Mon Sep 17 00:00:00 2001
From: Alexey Kudravtsev <cdr@intellij.com>
Date: Tue, 18 Feb 2014 14:11:35 +0400
Subject: [PATCH] NPE

---
 .../com/intellij/usages/impl/UsageViewTreeCellRenderer.java   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/platform/usageView/src/com/intellij/usages/impl/UsageViewTreeCellRenderer.java b/platform/usageView/src/com/intellij/usages/impl/UsageViewTreeCellRenderer.java
index a4f6e9dd5779..d6edbbb655bc 100644
--- a/platform/usageView/src/com/intellij/usages/impl/UsageViewTreeCellRenderer.java
+++ b/platform/usageView/src/com/intellij/usages/impl/UsageViewTreeCellRenderer.java
@@ -238,14 +238,14 @@ class UsageViewTreeCellRenderer extends ColoredTreeCellRenderer {
   public RowLocation isRowVisible(int row, @NotNull Rectangle visibleRect) {
     Dimension pref;
     if (cachedPreferredSize == null) {
-      pref = cachedPreferredSize = getPreferredSize();
+      cachedPreferredSize = pref = getPreferredSize();
     }
     else {
       pref = cachedPreferredSize;
     }
     pref.width = Math.max(visibleRect.width, pref.width);
     myRowBoundsCalled = true;
-    final JTree tree = getTree();
+    JTree tree = getTree();
     final Rectangle bounds = tree == null ? null : tree.getRowBounds(row);
     myRowBoundsCalled = false;
     int y = bounds == null ? 0 : bounds.y;