Remove most vfprintf width/precision-dependent allocations (bug 14231, bug 26211)

[Andreas Schwab]

On Jul 07 2020, Joseph Myers wrote:

> All that complicated logic in fact appears to be useless.  As far as I
> can tell, there has been no need (outside the floating-point printf
> code, which does its own allocations) for allocations depending on
> width or precision since commit
> 3e95f6602b226e0de06aaff686dc47b282d7cc16 ("Remove limitation on size
> of precision for integers", Sun Sep 12 21:23:32 1999 +0000).

This is surprising, but I agree.

LGTM.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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