BUG/MINOR: haproxy: fix rule->file memory leak

When using the "use_backend" configuration directive, the configuration
file name stored as rule->file was not freed in some situations. This
was introduced in commit 4ed1c95 ("MINOR: http/conf: store the
use_backend configuration file and line for logs").

This patch should be backported to 1.9, 1.8 and 1.7.
1 file changed