From 88bec75f510149679bf5b824a6a19ffa84eed812 Mon Sep 17 00:00:00 2001
From: Ben Kelly <bkelly@uoguelph.ca>
Date: Sun, 22 Jan 2012 15:34:39 -0800
Subject: [PATCH] Convert NULL pointer to nil. Fixes #17

---
 common/lqt_common.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/common/lqt_common.cpp b/common/lqt_common.cpp
index db6f617..9c0d8db 100644
--- a/common/lqt_common.cpp
+++ b/common/lqt_common.cpp
@@ -438,6 +438,12 @@ void lqtL_unregister (lua_State *L, const void *p) {
 
 void lqtL_pushudata (lua_State *L, const void *p, const char *name) {
     bool already = false;
+    
+    if (p == NULL) {
+        lua_pushnil(L); // (1)
+        return;
+    }
+    
     lqtL_ensurepointer(L, p); // (1)
     if (lua_getmetatable(L, -1)) {
         // (2)
-- 
2.11.4.GIT