Fix Lua 5.3 compatibility code.

If Lua 5.3 is compiled with LUA_COMPAT_5_2 defined, the
luaL_checkunsigned compatibility macro is already defined
in lauxlib.h.

Signed-off-by: Thomas Moschny <thomas.moschny@gmx.de>

diff --git a/src/lua-lxc/core.c b/src/lua-lxc/core.c
index 630a3e4ea64bd55a3c8febaa305e1c0bd6064579..34180a77523c95bb8ca4593c84c07920ffba739f 100644 (file)
--- a/src/lua-lxc/core.c
+++ b/src/lua-lxc/core.c
@@ -39,8 +39,10 @@
 #endif
 
 #if LUA_VERSION_NUM >= 503
+#ifndef luaL_checkunsigned
 #define luaL_checkunsigned(L,n) ((lua_Unsigned)luaL_checkinteger(L,n))
 #endif
+#endif
 
 #ifdef NO_CHECK_UDATA
 #define checkudata(L,i,tname)  lua_touserdata(L, i)