[Commits] [wesnoth/wesnoth] 8ba6e5: fix code problems found by luacheck (#2380)

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/wesnoth/wesnoth
  Commit: 8ba6e5f40eb1bdd8c164448cd6ea47f00877b2e5
      https://github.com/wesnoth/wesnoth/commit/8ba6e5f40eb1bdd8c164448cd6ea47f00877b2e5
  Author: vgaming <33452702+vgaming at users.noreply.github.com>
  Date:   2018-01-20 (Sat, 20 Jan 2018)

  Changed paths:
    M data/lua/backwards-compatibility.lua
    M data/lua/cave_map_generator.lua
    M data/lua/core.lua
    M data/lua/helper.lua
    M data/lua/ilua.lua
    M data/lua/mapgen_helper.lua
    M data/lua/on_event.lua
    M data/lua/wml-flow.lua
    M data/lua/wml-tags.lua
    M data/lua/wml-utils.lua

  Log Message:
  -----------
  fix code problems found by luacheck (#2380)

actual bugs found:
* backwards_compatibility.lua (undeclared global "helper")
* core.lua (use of undeclared global "helper")
* wml_tags.transform_unit had wrong code to deal with recall_cost
* wrong variable name in cave_map_generator