Re: [PATCH 2/6] t: harmonize t-reftable-stack.c with coding guidelines

> Harmonize the newly ported test unit-tests/t-reftable-stack.c
> with the following guidelines:
> - Single line 'for' statements must omit curly braces.
> - Structs must be 0-initialized with '= { 0 }' instead of '= { NULL }'.
> - Array sizes and indices should preferably be of type 'size_t'and

>   not 'int'.
> - Function pointers should be passed as 'func' and not '&func'.
>
> While at it, remove initialization for those variables that are
> re-used multiple times, like loop variables.
>
> Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>