awk: use static tmpvars instead of nvalloc(1)ed ones

ptest() was using this idea already.

As far as I can see, this is safe. Ttestsuite passes.

One downside is that a temporary from e.g. printf invocation
won't be freed until the next printf call.

function                                             old     new   delta
awk_printf                                           481     468     -13
as_regex                                             137     111     -26
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(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-39)             Total: -39 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

0 files changed, 0 insertions, 0 deletions