From abf0d1134890e52930c757ce3179ddba2731e364 Mon Sep 17 00:00:00 2001
From: michael starke <michael.starke@hicknhack-software.com>
Date: Fri, 27 Jan 2017 10:49:03 +0100
Subject: [PATCH] do not attempt to transale an invalid key

---
 MacPass/MPKeyMapper.m | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/MacPass/MPKeyMapper.m b/MacPass/MPKeyMapper.m
index f638e3ab..669ff82a 100644
--- a/MacPass/MPKeyMapper.m
+++ b/MacPass/MPKeyMapper.m
@@ -33,6 +33,9 @@ uint16_t const kMPUnknownKeyCode = UINT16_MAX;
 }
 
 + (NSString *)stringForModifiedKey:(MPModifiedKey)modifiedKey {
+  if(modifiedKey.keyCode == kMPUnknownKeyCode) {
+    return nil;
+  }
   TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource();
   CFDataRef layoutData = TISGetInputSourceProperty(currentKeyboard,kTISPropertyUnicodeKeyLayoutData);