tests/test-gendoc-pt_BR.t

crecord: restore SIGWINCH handler before return

Previously, the SIGWINCH handler does not get cleared and if the commit
message editor also needs SIGWINCH handling (like vim), the two SIGWINCH
handlers (the editor's, ours) will have a race. And we may erase the
editor's screen content.

This patch restores SIGWINCH handler to address the above issue.

#require docutils gettext

  $ $TESTDIR/check-gendoc pt_BR
  checking for parse errors