Use < 0 and > 0 for strCmp() tests.
Use < 0 and > 0 for strCmp() tests.

Using -1 and 1 was a bit sloppy since the spec only guarantees that the values will be < 0 and > 0.

Found on arm64 where the values were -64 and 64.

pgmasters/backrest,pgbackrest/pgbackrest,pgbackrest/pgbackrest,pgbackrest/pgbackrest,pgmasters/backrest