jscript: Change prototype of jsstr_alloc_buf and fix some error handling issues.

[Sebastian Lackner]

On 07.09.2016 10:34, Jacek Caban wrote:
> Hi Sebastian,
> 
> The patch looks mostly good, but I get a compiler warning (a false one,
> but still):
> 
> In file included from jsval.h:22:0,
>                  from jscript.h:377,
>                  from array.c:25:
> array.c: In function ‘array_join’:
> jsstr.h:109:7: warning: ‘ret’ may be used uninitialized in this function
> [-Wmaybe-uninitialized]
>      if(!--str->ref)
>        ^
> array.c:243:25: note: ‘ret’ was declared here
>      jsstr_t **str_tab, *ret;
>                          ^
> 
> Thanks,
> Jacek
> 
> 

Thanks, I didn't encounter that with my compiler (GCC 6.1.1). I've sent an
updated version.