From a007e99dd05c6df9371c9c4fe3ef1bde7072b73d Mon Sep 17 00:00:00 2001
From: Julia Beliaeva <Julia.Beliaeva@jetbrains.com>
Date: Thu, 21 Mar 2019 19:46:54 +0300
Subject: [PATCH] [file-history] do not try to show diff when changes array is
 empty

EA-140308
---
 .../history/CompareRevisionsFromFileHistoryActionProvider.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/actions/history/CompareRevisionsFromFileHistoryActionProvider.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/actions/history/CompareRevisionsFromFileHistoryActionProvider.java
index 253b26c109a7..a679d8afc0c5 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/actions/history/CompareRevisionsFromFileHistoryActionProvider.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/actions/history/CompareRevisionsFromFileHistoryActionProvider.java
@@ -53,7 +53,7 @@ public class CompareRevisionsFromFileHistoryActionProvider implements AnActionEx
 
     Project project = e.getRequiredData(CommonDataKeys.PROJECT);
     Change[] changes = e.getData(VcsDataKeys.SELECTED_CHANGES);
-    if (changes == null || changes.length > 1 || changes[0] == null) return;
+    if (changes == null || changes.length != 1 || changes[0] == null) return;
 
     ShowDiffAction.showDiffForChange(project, Arrays.asList(changes));
   }