char-TPM: Adjustments for ten function implementations

[Joe Perches]

On Wed, 2017-10-18 at 10:44 +0000, Alexander.Steffen at infineon.com wrote:
> > For instance, nothing about
> > > > 	sizeof(type)
> > > > vs
> > > > 	sizeof(*ptr)
> > > > makes it easier for a human to read the code.
> > > 
> > > If it does not make it easier to read the code for you, then maybe you
> > > should consider that this might not be true for all humans. For me, it
> > > makes it much easier to see at a glance, that code like
> > > ptr=malloc(sizeof(*ptr)) is correct.
> > 
> > I don't think there is a perfect solution.
> 
> Maybe. But for the second variant the correctness is easier to check,

How often should
	ptr = alloc(sizeof(*ptr))
be
	ptr = alloc(sizeof(**ptr))

>  both mentally and programmatically, because there is no need for any context (the type of ptr does not matter).

Context matters.