From a698156d4dfe338da9d06eb35913bdf1565ee3b1 Mon Sep 17 00:00:00 2001
From: Stas Degteff <stas_degteff@users.sourceforge.net>
Date: Tue, 22 Feb 2011 16:18:21 +0000
Subject: [PATCH] Check parameters of ShellToDos() and Unpack(). Bugreport from
 Semen Panevin 2:5025/121

---
 golded3/geedit2.cpp | 4 +++-
 golded3/geread2.cpp | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/golded3/geedit2.cpp b/golded3/geedit2.cpp
index 67864b5..2f203a1 100644
--- a/golded3/geedit2.cpp
+++ b/golded3/geedit2.cpp
@@ -1369,7 +1369,9 @@ void IEclass::DosShell() {
 
   GFTRK("EditDosShell");
 
-  ShellToDos(getenv(GOLD_SHELL_ENV), LNG->DOS_Shell, LGREY_|_BLACK, YES);
+  char * shell = getenv(GOLD_SHELL_ENV);
+  if( shell && *shell )
+    ShellToDos(shell, LNG->DOS_Shell, LGREY_|_BLACK, YES);
   cursoron();
   cursoroff();
 
diff --git a/golded3/geread2.cpp b/golded3/geread2.cpp
index 3ea12fe..cd5d691 100644
--- a/golded3/geread2.cpp
+++ b/golded3/geread2.cpp
@@ -511,7 +511,9 @@ void NewArea(bool jumpnext) {
 
 void DosShell() {
 
-  ShellToDos(getenv(GOLD_SHELL_ENV), LNG->DOS_Shell, LGREY_|_BLACK, YES);
+  char * shell = getenv(GOLD_SHELL_ENV);
+  if( shell && *shell )
+    ShellToDos(shell, LNG->DOS_Shell, LGREY_|_BLACK, YES);
 }