From b3dbdfa3066d1cde4d72579527e2004218d4ec0d Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 24 Jan 2001 09:01:32 +0000
Subject: [PATCH] Robert Weaver's fix

---
 lib/getenv.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/getenv.c b/lib/getenv.c
index 0c23e76aa..941ee8535 100644
--- a/lib/getenv.c
+++ b/lib/getenv.c
@@ -41,12 +41,13 @@ char *GetEnv(char *variable)
   char env[MAX_PATH]; /* MAX_PATH is from windef.h */
   char *temp = getenv(variable);
   env[0] = '\0';
-  ExpandEnvironmentStrings(temp, env, sizeof(env));
+  if (temp != NULL)
+    ExpandEnvironmentStrings(temp, env, sizeof(env));
 #else
   /* no length control */
   char *env = getenv(variable);
 #endif
-  return env?strdup(env):NULL;
+  return (env && env[0])?strdup(env):NULL;
 }
 
 char *curl_getenv(char *v)