util-src/*.c: Use the more concise lua_setfield

util-src/encodings.c

@@ -368,23 +368,19 @@ LUALIB_API int luaopen_util_encodings(lua_State *L)
 #endif
 	lua_newtable(L);
 
-	lua_pushliteral(L, "base64");
 	lua_newtable(L);
 	luaL_register(L, NULL, Reg_base64);
-	lua_settable(L,-3);
+	lua_setfield(L, -2, "base64");
 
-	lua_pushliteral(L, "stringprep");
 	lua_newtable(L);
 	luaL_register(L, NULL, Reg_stringprep);
-	lua_settable(L,-3);
+	lua_setfield(L, -2, "stringprep");
 
-	lua_pushliteral(L, "idna");
 	lua_newtable(L);
 	luaL_register(L, NULL, Reg_idna);
-	lua_settable(L,-3);
+	lua_setfield(L, -2, "idna");
 
-	lua_pushliteral(L, "version");			/** version */
 	lua_pushliteral(L, "-3.14");
-	lua_settable(L,-3);
+	lua_setfield(L, -2, "version");
 	return 1;
 }

util-src/hashes.c

@@ -205,8 +205,7 @@ LUALIB_API int luaopen_util_hashes(lua_State *L)
 {
 	lua_newtable(L);
 	luaL_register(L, NULL, Reg);
-	lua_pushliteral(L, "version");			/** version */
 	lua_pushliteral(L, "-3.14");
-	lua_settable(L,-3);
+	lua_setfield(L, -2, "version");
 	return 1;
 }

util-src/signal.c

@@ -391,7 +391,7 @@ int luaopen_util_signal(lua_State *L)
   /* put the signals inside the library table too,
    * they are only a reference */
   lua_pushstring(L, LUA_SIGNAL);
-  lua_createtable(L, 0, 0);
+  lua_newtable(L);
 
   while (lua_signals[i].name != NULL)
   {

util-src/windows.c

@@ -83,8 +83,7 @@ static const luaL_Reg Reg[] =
 LUALIB_API int luaopen_util_windows(lua_State *L) {
 	lua_newtable(L);
 	luaL_register(L, NULL, Reg);
-	lua_pushliteral(L, "version");			/** version */
 	lua_pushliteral(L, "-3.14");
-	lua_settable(L,-3);
+	lua_setfield(L, -2, "version");
 	return 1;
 }