From 172d324243a6b13e3d188700e20850afdeba8add Mon Sep 17 00:00:00 2001
From: Bruno Silvestre <brunoos@inf.ufg.br>
Date: Fri, 20 Nov 2015 19:16:16 -0200
Subject: [PATCH] Fix push_asn1_string().

---
 src/x509.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/x509.c b/src/x509.c
index 5e7a1dd..12c9c2e 100644
--- a/src/x509.c
+++ b/src/x509.c
@@ -86,10 +86,12 @@ static void push_asn1_objname(lua_State* L, ASN1_OBJECT *object, int no_name)
  */
 static void push_asn1_string(lua_State* L, ASN1_STRING *string, int encode)
 {
-  size_t len;
+  int len; 
   unsigned char *data;
-  if (!string)
+  if (!string) {
     lua_pushnil(L);
+    return;
+  }
   switch (encode) {
   case LSEC_AI5_STRING:
     lua_pushlstring(L, (char*)ASN1_STRING_data(string),
@@ -101,6 +103,8 @@ static void push_asn1_string(lua_State* L, ASN1_STRING *string, int encode)
       lua_pushlstring(L, (char*)data, len);
       OPENSSL_free(data);
     }
+    else
+      lua_pushnil(L);
   }
 }