Willy Tarreau 77128f585c MINOR: sample: provide smp_is_rw() and smp_make_rw()
At some places, smp_dup() is inappropriately called to ensure a modification
is possible while in fact we only need to ensure the sample may be modified
in place. Let's provide smp_is_rw() to check for this capability and
smp_make_rw() to perform the smp_dup() when it is not the case.

Note that smp_is_rw() will also try to add the trailing zero on strings when
needed if possible, to avoid a useless duplication.
2016-08-09 14:30:57 +02:00
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