CLEANUP: sample: uninline sample_conv_var2smp_str()

There's no reason to limit this one to this file, it could be used in
other contexts.

(cherry picked from commit 4034e2cb5895c08bd821d4db6b5c47f90c4cd121)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
2 files changed