From d534bfc9586c1260d3255f949b7aa6f48511af3a Mon Sep 17 00:00:00 2001
From: osch <oliver at luced de>
Date: Tue, 4 Sep 2018 21:59:23 +0200
Subject: avoid NULL as parameter to lua_concat in llthread_log

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

(limited to 'src')

diff --git a/src/llthread.c b/src/llthread.c
index 57f8dc3..a3b3216 100644
--- a/src/llthread.c
+++ b/src/llthread.c
@@ -132,11 +132,12 @@ static int fail(lua_State *L, const char *msg){
 void llthread_log(lua_State *L, const char *hdr, const char *msg){
   int top = lua_gettop(L);
   lua_rawgetp(L, LUA_REGISTRYINDEX, LLTHREAD_LOGGER_HOLDER);
+  if (!msg) 
+    msg = "(no error message)";
   if(lua_isnil(L, -1)){
     lua_pop(L, 1);
     fputs(hdr,  stderr);
-    if (msg) fputs(msg,  stderr);
-    else     fputs("(no error message)",  stderr);
+    fputs(msg,  stderr);
     fputc('\n', stderr);
     fflush(stderr);
     return;
-- 
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