fix #555: keyfile selection issue

(cherry picked from commit 55c224d)

app/scripts/views/open-view.js

@@ -454,6 +454,7 @@ const OpenView = Backbone.View.extend({
         this.params.rev = null;
         this.params.keyFileName = fileInfo.get('keyFileName');
         this.params.keyFilePath = fileInfo.get('keyFilePath');
+        this.params.keyFileData = null;
         this.displayOpenFile();
         this.displayOpenKeyFile();
     },

release-notes.md

@@ -2,6 +2,7 @@ Release notes
 -------------
 ##### v1.4.1 (TBD)
 `+` fix #544: read files with empty binaries  
+`+` fix #555: keyfile selection issue  
 
 ##### v1.4.0 (2017-02-04)
 KDBX4 format support and minor improvements