[PATCH] pack-object: trim memory usage a tiny bit

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This shrinks struct object_entry from 88 bytes to 80 bytes on my 32
bit machine. So that would be 12M less on linux-2.6.git (1.6M objects)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 Don't know if it's really worth a patch..

 builtin/pack-objects.c |   18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 0e81673..398c0bb 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -47,14 +47,14 @@ struct object_entry {
 	unsigned long delta_size;	/* delta data size (uncompressed) */
 	unsigned long z_delta_size;	/* delta data size (compressed) */
 	unsigned int hash;	/* name hint hash */
-	enum object_type type;
-	enum object_type in_pack_type;	/* could be delta */
+	enum object_type type:5;
+	enum object_type in_pack_type:5;	/* could be delta */
 	unsigned char in_pack_header_size;
-	unsigned char preferred_base; /* we do not pack this, but is available
-				       * to be used as the base object to delta
-				       * objects against.
-				       */
-	unsigned char no_try_delta;
+	unsigned char preferred_base:1; /* we do not pack this, but is available
+					 * to be used as the base object to delta
+					 * objects against.
+					 */
+	unsigned char no_try_delta:1;
 };
 
 /*
@@ -1001,6 +1001,7 @@ static void check_object(struct object_entry *entry)
 		unsigned int avail;
 		off_t ofs;
 		unsigned char *buf, c;
+		enum object_type in_pack_type;
 
 		buf = use_pack(p, &w_curs, entry->in_pack_offset, &avail);
 
@@ -1009,8 +1010,9 @@ static void check_object(struct object_entry *entry)
 		 * since non-delta representations could still be reused.
 		 */
 		used = unpack_object_header_buffer(buf, avail,
-						   &entry->in_pack_type,
+						   &in_pack_type,
 						   &entry->size);
+		entry->in_pack_type = in_pack_type;
 		if (used == 0)
 			goto give_up;
 
-- 
1.7.1.rc1.69.g24c2f7