Use --no-loop for new calls of pg_receivewal --endpos in TAP tests
Those tests are not designed to fail, but if they do, like on some cases
for Windows because of ZLIB (?), they could remain stuck. Using
--no-loop makes the test fail immediately. The oldest test with
--endpos already did that.
Those tests have been added in
ffc9dda.
Reviewed-by: Andrew Dunstan
Discussion: https://postgr.es/m/
ec093ff1-a53c-0091-46a2-
4537354b0dd4@dunslane.net