From dc990012ac7f0de68db100f9b2512a89f4dc9cbc Mon Sep 17 00:00:00 2001
From: Volker Birk <vb@pep-project.org>
Date: Mon, 6 Jul 2020 15:37:04 +0200
Subject: [PATCH] return stable empty string

---
 passphrase_cache.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/passphrase_cache.cc b/passphrase_cache.cc
index 0027f36..6227f06 100644
--- a/passphrase_cache.cc
+++ b/passphrase_cache.cc
@@ -47,7 +47,8 @@ namespace pEp {
             return back.passphrase.c_str();
         }
 
-        return "";
+        static const char *empty = "";
+        return empty;
     }
 
     const char *PassphraseCache::add_stored(const std::string& passphrase)