LPeg test on Lua 5.2

[Shmuel Zeigerman <shmuz@...>]

After converting LPeg to Lua 5.2 (that was easy), its test fails:

> lua52: test_lpeg.lua:301: bad argument #3 to 'match' (number expected, got string)
> stack traceback:
> 	[C]: in function 'match'
> 	test_lpeg.lua:301: in function 'checkerr'
> 	test_lpeg.lua:305: in main chunk
> 	[C]: in ?

--
Shmuel