From 10c2787dcb07398b3a808efbac929f568f3d215a Mon Sep 17 00:00:00 2001
From: Iain Patterson <me@iain.cx>
Date: Mon, 29 Aug 2016 11:01:37 +0100
Subject: [PATCH] Initialise hook command widget correctly.

We weren't explicitly zeroing the GUI widget for entering the hook command.
---
 gui.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gui.cpp b/gui.cpp
index 628b136..0fa11f4 100644
--- a/gui.cpp
+++ b/gui.cpp
@@ -354,7 +354,7 @@ static inline void set_hook_tab(int event_index, int action_index, bool changed)
     SetEnvironmentVariable(hook_name, cmd);
   }
   else {
-    GetEnvironmentVariable(hook_name, cmd, _countof(cmd));
+    if (! GetEnvironmentVariable(hook_name, cmd, _countof(cmd))) cmd[0] = _T('\0');
     SetDlgItemText(tablist[NSSM_TAB_HOOKS], IDC_HOOK, cmd);
   }
 }
-- 
2.7.4