[PATCH v2 2/3] manual: clarify errno value on success [BZ #22615]

[Dmitry V. Levin]

On Fri, Dec 22, 2017 at 08:31:00PM +0100, Aurelien Jarno wrote:
> The current glibc manual is ambiguous about the errno value on success
> and suggests that it is left unchanged. Some functions might and
> sometimes do change the errno value, however they never set it to 0.

The trailing part "however they never set it to 0" is not quite correct:
the next patch in the series moves "__set_errno (0)" around.

The patch looks OK, please commit.


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