From fc6ba4d407d6b5ac02771fe49a2a1de9a63319c9 Mon Sep 17 00:00:00 2001
From: jonchui <jon.chui@gmail.com>
Date: Mon, 15 May 2017 15:48:28 -1000
Subject: [PATCH] Fixes startup crash. by checking for nil, before calling
 #takeRetainedValue.  #26

---
 OpenSim/LaunchAtLoginHelper.swift | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/OpenSim/LaunchAtLoginHelper.swift b/OpenSim/LaunchAtLoginHelper.swift
index a577a4a..87603e1 100644
--- a/OpenSim/LaunchAtLoginHelper.swift
+++ b/OpenSim/LaunchAtLoginHelper.swift
@@ -26,10 +26,13 @@ func existingItem(itemUrl: URL) -> LSSharedFileListItem? {
     if let currentItems = LSSharedFileListCopySnapshot(loginItems, &seed).takeRetainedValue() as? [LSSharedFileListItem] {
         for item in currentItems {
             let resolutionFlags = UInt32(kLSSharedFileListNoUserInteraction | kLSSharedFileListDoNotMountVolumes)
-            let url = LSSharedFileListItemCopyResolvedURL(item, resolutionFlags, nil).takeRetainedValue() as URL
-            if itemUrl == url {
-                return item
+            if let cfurl = LSSharedFileListItemCopyResolvedURL(item, resolutionFlags, nil) {
+                let url = cfurl.takeRetainedValue() as URL
+                if itemUrl == url {
+                    return item
+                }
             }
+            
         }
     }
     return nil