[PATCH 4/6][Trivial] tree-sra.c: A few comment fixes/additions.

[Jeff Law]

On 10/29/2015 01:18 PM, Alan Lawrence wrote:
> gcc/ChangeLog:
>
> 	* tree-sra.c (scalarizable_type_p): Comment variable-length arrays.
> 	(completely_scalarize): Comment zero-length arrays.
> 	(get_access_replacement): Correct comment re. precondition.
Trivially OK :-)

jeff