MFC r272025:

Fix thinko that, with two map entries like shown below, in that order,
made autofs mix them up: the second one wasn't visible in ls(1) output,
and trying to access it would trigger mount for the first one.

foobar          host:/foobar
foo             host:/foo

Approved by:	re (gjb)
Sponsored by:	The FreeBSD Foundation
MFC r272037:

Fix thinko that, with two map entries like shown below, in that order,
made automountd(8) mix them up: trying to access the second one would
trigger mount for the first one.

foo             host:/foo
foobar          host:/foobar

PR:		193584
Approved by:	re (gjb)
Sponsored by:	The FreeBSD Foundation