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autofs-5.1.8 - simplify cache_add() a little

From: Ian Kent <raven@themaw.net>

If a map entry is being added to an existing hash chain there's an
unneccessarily complicted setting of ->next of the last entry.

Just initialize the map entry ->next field instead and remove the
confusing assignment.

Signed-off-by: Ian Kent <raven@themaw.net>
---
 CHANGELOG   |    1 +
 lib/cache.c |    2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

--- autofs-5.1.4.orig/CHANGELOG
+++ autofs-5.1.4/CHANGELOG
@@ -87,6 +87,7 @@
 - fix nonstrict fail handling of last offset mount.
 - dont fail on duplicate offset entry tree add.
 - fix loop under run in cache_get_offset_parent().
+- simplify cache_add() a little.
 
 xx/xx/2018 autofs-5.1.5
 - fix flag file permission.
--- autofs-5.1.4.orig/lib/cache.c
+++ autofs-5.1.4/lib/cache.c
@@ -564,6 +564,7 @@ int cache_add(struct mapent_cache *mc, s
 	me->dev = (dev_t) -1;
 	me->ino = (ino_t) -1;
 	me->flags = 0;
+	me->next = NULL;
 
 	/* 
 	 * We need to add to the end if values exist in order to
@@ -583,7 +584,6 @@ int cache_add(struct mapent_cache *mc, s
 
 			existing = next;
 		}
-		me->next = existing->next;
 		existing->next = me;
 	}
 	return CHE_OK;