lua: restore return value of require('uci') to module table.

Before commit "b121dd lua: add lua 5.2 compatibility changes", the
module table was filled by luaL_register() which would leave the table
at the top of the stack.  But in current code the module table will be
popped by lua_setglobal() causing the return value defaulting to boolean
value true.

Also fix the return value of luaopen_uci() to 1 to indicate the number
of return value on stack.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

diff --git a/lua/uci.c b/lua/uci.c
index 8ace746..6ba7da0 100644 (file)
--- a/lua/uci.c
+++ b/lua/uci.c
@@ -994,8 +994,9 @@ luaopen_uci(lua_State *L)
 
        /* create module */
        lua_newtable(L);
+       lua_pushvalue(L, -1);
        luaL_setfuncs(L, uci, 0);
        lua_setglobal(L, MODNAME);
 
-       return 0;
+       return 1;
 }