Fix various points reported by cppcheck (#5656)

* Fix various performance issues reported by cppcheck + code style (CI)

* Make CI happy with code style on master
* guiFileSelectMenu: remove useless includes
* some performance fixes pointed by cppcheck
* remove some useless casts
* TextDest: remove unused setFormSpec function

* Fix various iterator post-increment reported by cppcheck

6 files changed, 8 insertions, 9 deletions

diff --git a/src/script/lua_api/l_client.cpp b/src/script/lua_api/l_client.cpp
index be3a749de..09ea5506b 100644
--- a/src/script/lua_api/l_client.cpp
+++ b/src/script/lua_api/l_client.cpp
@@ -83,7 +83,7 @@ int ModApiClient::l_get_player_names(lua_State *L)
 	int newTable = lua_gettop(L);
 	int index = 1;
 	std::list<std::string>::const_iterator iter;
-	for (iter = plist.begin(); iter != plist.end(); iter++) {
+	for (iter = plist.begin(); iter != plist.end(); ++iter) {
 		lua_pushstring(L, (*iter).c_str());
 		lua_rawseti(L, newTable, index);
 		index++;
diff --git a/src/script/lua_api/l_craft.cpp b/src/script/lua_api/l_craft.cpp
index 2236566de..315391856 100644
--- a/src/script/lua_api/l_craft.cpp
+++ b/src/script/lua_api/l_craft.cpp
@@ -414,7 +414,7 @@ static void push_craft_recipe(lua_State *L, IGameDef *gdef,
 
 	lua_newtable(L); // items
 	std::vector<ItemStack>::const_iterator iter = input.items.begin();
-	for (u16 j = 1; iter != input.items.end(); iter++, j++) {
+	for (u16 j = 1; iter != input.items.end(); ++iter, j++) {
 		if (iter->empty())
 			continue;
 		lua_pushstring(L, iter->name.c_str());
diff --git a/src/script/lua_api/l_env.cpp b/src/script/lua_api/l_env.cpp
index 1fa7845b5..75b07fa37 100644
--- a/src/script/lua_api/l_env.cpp
+++ b/src/script/lua_api/l_env.cpp
@@ -534,7 +534,7 @@ int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
 	ScriptApiBase *script = getScriptApiBase(L);
 	lua_createtable(L, ids.size(), 0);
 	std::vector<u16>::const_iterator iter = ids.begin();
-	for(u32 i = 0; iter != ids.end(); iter++) {
+	for(u32 i = 0; iter != ids.end(); ++iter) {
 		ServerActiveObject *obj = env->getActiveObject(*iter);
 		// Insert object reference into table
 		script->objectrefGetOrCreate(L, obj);
@@ -985,8 +985,7 @@ int ModApiEnvMod::l_find_path(lua_State *L)
 		lua_newtable(L);
 		int top = lua_gettop(L);
 		unsigned int index = 1;
-		for (std::vector<v3s16>::iterator i = path.begin(); i != path.end();i++)
-		{
+		for (std::vector<v3s16>::iterator i = path.begin(); i != path.end(); ++i) {
 			lua_pushnumber(L,index);
 			push_v3s16(L, *i);
 			lua_settable(L, top);
diff --git a/src/script/lua_api/l_mainmenu.cpp b/src/script/lua_api/l_mainmenu.cpp
index 3d204db98..4d0be257c 100644
--- a/src/script/lua_api/l_mainmenu.cpp
+++ b/src/script/lua_api/l_mainmenu.cpp
@@ -297,7 +297,7 @@ int ModApiMainMenu::l_get_games(lua_State *L)
 		int table2 = lua_gettop(L);
 		int internal_index=1;
 		for (std::set<std::string>::iterator iter = games[i].addon_mods_paths.begin();
-				iter != games[i].addon_mods_paths.end(); iter++) {
+				iter != games[i].addon_mods_paths.end(); ++iter) {
 			lua_pushnumber(L,internal_index);
 			lua_pushstring(L,(*iter).c_str());
 			lua_settable(L, table2);
diff --git a/src/script/lua_api/l_nodemeta.cpp b/src/script/lua_api/l_nodemeta.cpp
index c65d56f14..6232112c5 100644
--- a/src/script/lua_api/l_nodemeta.cpp
+++ b/src/script/lua_api/l_nodemeta.cpp
@@ -107,7 +107,7 @@ void NodeMetaRef::handleToTable(lua_State *L, Metadata *_meta)
 	if (inv) {
 		std::vector<const InventoryList *> lists = inv->getLists();
 		for(std::vector<const InventoryList *>::const_iterator
-				i = lists.begin(); i != lists.end(); i++) {
+				i = lists.begin(); i != lists.end(); ++i) {
 			push_inventory_list(L, inv, (*i)->getName().c_str());
 			lua_setfield(L, -2, (*i)->getName().c_str());
 		}
diff --git a/src/script/lua_api/l_server.cpp b/src/script/lua_api/l_server.cpp
index d94f3e31d..813d5a945 100644
--- a/src/script/lua_api/l_server.cpp
+++ b/src/script/lua_api/l_server.cpp
@@ -103,7 +103,7 @@ int ModApiServer::l_get_player_privs(lua_State *L)
 	int table = lua_gettop(L);
 	std::set<std::string> privs_s = server->getPlayerEffectivePrivs(name);
 	for(std::set<std::string>::const_iterator
-			i = privs_s.begin(); i != privs_s.end(); i++){
+			i = privs_s.begin(); i != privs_s.end(); ++i){
 		lua_pushboolean(L, true);
 		lua_setfield(L, table, i->c_str());
 	}
@@ -417,7 +417,7 @@ int ModApiServer::l_get_modnames(lua_State *L)
 	// Package them up for Lua
 	lua_createtable(L, modlist.size(), 0);
 	std::vector<std::string>::iterator iter = modlist.begin();
-	for (u16 i = 0; iter != modlist.end(); iter++) {
+	for (u16 i = 0; iter != modlist.end(); ++iter) {
 		lua_pushstring(L, iter->c_str());
 		lua_rawseti(L, -2, ++i);
 	}