Various random code cleanups

src/script/lua_api/l_craft.cpp

@@ -411,7 +411,7 @@ static void push_craft_recipe(lua_State *L, IGameDef *gdef,
 	CraftOutput output = recipe->getOutput(input, gdef);
 
 	lua_newtable(L); // items
-	std::vector<ItemStack>::const_iterator iter = input.items.begin();
+	auto iter = input.items.begin();
 	for (u16 j = 1; iter != input.items.end(); ++iter, j++) {
 		if (iter->empty())
 			continue;
@@ -457,7 +457,7 @@ static void push_craft_recipes(lua_State *L, IGameDef *gdef,
 
 	lua_createtable(L, recipes.size(), 0);
 
-	std::vector<CraftDefinition*>::const_iterator it = recipes.begin();
+	auto it = recipes.begin();
 	for (unsigned i = 0; it != recipes.end(); ++it) {
 		lua_newtable(L);
 		push_craft_recipe(L, gdef, *it, output);

src/script/lua_api/l_mapgen.cpp

@@ -250,7 +250,7 @@ bool read_schematic_def(lua_State *L, int index,
 		u8 param2 = getintfield_default(L, -1, "param2", 0);
 
 		//// Find or add new nodename-to-ID mapping
-		std::unordered_map<std::string, content_t>::iterator it = name_id_map.find(name);
+		auto it = name_id_map.find(name);
 		content_t name_index;
 		if (it != name_id_map.end()) {
 			name_index = it->second;

src/script/lua_api/l_rollback.cpp

@@ -36,7 +36,7 @@ int ModApiRollback::l_rollback_get_node_actions(lua_State *L)
 	}
 
 	std::list<RollbackAction> actions = rollback->getNodeActors(pos, range, seconds, limit);
-	std::list<RollbackAction>::iterator iter = actions.begin();
+	auto iter = actions.begin();
 
 	lua_createtable(L, actions.size(), 0);
 	for (unsigned int i = 1; iter != actions.end(); ++iter, ++i) {
@@ -86,8 +86,7 @@ int ModApiRollback::l_rollback_revert_actions_by(lua_State *L)
 	lua_pushboolean(L, success);
 	lua_createtable(L, log.size(), 0);
 	unsigned long i = 0;
-	for(std::list<std::string>::const_iterator iter = log.begin();
-			iter != log.end(); ++i, ++iter) {
+	for(auto iter = log.begin(); iter != log.end(); ++i, ++iter) {
 		lua_pushnumber(L, i);
 		lua_pushstring(L, iter->c_str());
 		lua_settable(L, -3);