[PATCH v4 01/15] decorate.c: compact table when growing

When growing the table, take the opportunity to "compact" it by removing
entries with NULL decoration.

Users may have "removed" decorations by passing NULL to
insert_decoration. An object's table entry can't actually be removed
during normal operation, as it would break the linear hash collision
search. But we can remove NULL decoration entries when rebuilding the
table.

Signed-off-by: Kevin Bracey <redacted>
---
 decorate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/decorate.c b/decorate.c
index 2f8a63e..7cb5d29 100644
--- a/decorate.c
+++ b/decorate.c

@@ -49,7 +49,7 @@ static void grow_decoration(struct decoration *n)
 		const struct object *base = old_hash[i].base;
 		void *decoration = old_hash[i].decoration;
 
-		if (!base)
+		if (!decoration)
 			continue;
 		insert_decoration(n, base, decoration);
 	}

-- 
1.8.3.rc0.28.g4b02ef5