vasnprintf: some tweaks

[Bruno Haible]

Three small tweaks of the *vasnprintf code:


2024-06-19  Bruno Haible  <bruno@clisp.org>

        vasnwprintf: Optimize handling of %c directive.
        * lib/vasnprintf.c (VASNPRINTF): Use a single ENSURE_ALLOCATION instead
        of two.

2024-06-19  Bruno Haible  <bruno@clisp.org>

        u*-vasnprintf: Fix a rare memory leak.
        * lib/vasnprintf.c (VASNPRINTF): Use ENSURE_ALLOCATION_ELSE instead of
        ENSURE_ALLOCATION, to free temporary allocations before failing due to
        out-of-memory.

2024-06-19  Bruno Haible  <bruno@clisp.org>

        u*-vasnprintf: Improve comments.
        * lib/vasnprintf.c (VASNPRINTF): Improve comments.

0001-u-vasnprintf-Improve-comments.patch
Description: Text Data

0002-u-vasnprintf-Fix-a-rare-memory-leak.patch
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0003-vasnwprintf-Optimize-handling-of-c-directive.patch
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