Fix luacov.tick

luacov.runner.init used package.loaded["luacov.tick"] to
determine whether it should save stats from time to time.
luacov.tick module used to set that field implicitly because
it called module().

In @8872071 (Oct 2012) module() call was removed, leaving luacov.tick broken.
Incidentally that always enabled on-exit gc hooks, so the problem was
not visible unless Lua somehow exited without calling them.

The fix is to use runner.tick field instead of package.loaded for
storing the flag.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/luacov/tick.lua b/src/luacov/tick.lua
index dbb43c6..fdf2b2d 100644
--- a/src/luacov/tick.lua
+++ b/src/luacov/tick.lua
@@ -5,5 +5,7 @@
 -- @class module
 -- @name luacov.tick
 -- @see luacov.defaults.savestepsize
-require("luacov")
+local runner = require("luacov.runner")
+runner.tick = true
+runner.init()
 return {}