From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 15 Sep 2023 21:31:53 +0000 (+0300)
Subject: Don't try to fetch the value of a nonexistent environment variable
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=116675a19106b3d17b85299ddb3f98e8978f48f8;p=libs%2Fcore.git

Don't try to fetch the value of a nonexistent environment variable
---

diff --git a/source/core/windows/environ.cpp b/source/core/windows/environ.cpp
index 2dd9d4c..b9ec27a 100644
--- a/source/core/windows/environ.cpp
+++ b/source/core/windows/environ.cpp
@@ -21,7 +21,7 @@ string getenv(const string &name)
 	MutexLock _lock(env_mutex());
 	string value;
 	size_t length = 0;
-	if(!getenv_s(&length, nullptr, 0, name.c_str()))
+	if(!getenv_s(&length, nullptr, 0, name.c_str()) && length>0)
 	{
 		value.resize(length);
 		if(!getenv_s(&length, &value[0], value.size(), name.c_str()))