question on sparc SHMLBA helper function

[David Miller]

From: Roland McGrath <roland@hack.frob.com>
Date: Fri, 16 Mar 2012 19:54:04 -0700 (PDT)

>> +      return (void *) -1;
> 
> I think that has to be -1l to avoid warnings when uintptr_t is larger than int.

Indeed, I'll fix that up, thanks Roland.