lua_objlen wrapped in luaA_rawlen

In lua 5.2 lua_objlen was renamed for now reason

Signed-off-by: Arvydas Sidorenko <asido4@gmail.com>

common/lualib.c

@@ -53,7 +53,7 @@ void luaA_dumpstack(lua_State *L)
             break;
           default:
             fprintf(stderr, "%d: %s\t#%d\t%p\n", i, lua_typename(L, t),
-                    (int) lua_objlen(L, i),
+                    (int) luaA_rawlen(L, i),
                     lua_topointer(L, i));
             break;
         }

dbus.c

@@ -276,7 +276,7 @@ a_dbus_convert_value(lua_State *L, int idx, DBusMessageIter *iter)
                                              type + 1,
                                              &subiter);
 
-            int arraylen = lua_objlen(L, idx + 1);
+            int arraylen = luaA_rawlen(L, idx + 1);
 
             if(arraylen % 2 != 0)
             {

luaa.h

@@ -94,6 +94,16 @@ luaA_setuservalue(lua_State *L, int idx)
 #endif
 } 
 
+static inline size_t
+luaA_rawlen(lua_State *L, int idx)
+{
+#if LUA_VERSION_NUM >= 502
+    return lua_rawlen(L, idx);
+#else
+    return lua_objlen(L, idx);
+#endif
+}
+
 static inline bool
 luaA_checkboolean(lua_State *L, int n)
 {

objects/key.c

@@ -142,7 +142,7 @@ uint16_t
 luaA_tomodifiers(lua_State *L, int ud)
 {
     luaA_checktable(L, ud);
-    ssize_t len = lua_objlen(L, ud);
+    ssize_t len = luaA_rawlen(L, ud);
     uint16_t mod = XCB_NONE;
     for(int i = 1; i <= len; i++)
     {