t1006: make hash size independent

Compute the size of the tree and commit objects we're creating by
checking for the size of an object ID and computing the resulting sizes
accordingly.

Signed-off-by: brian m. carlson <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: bk2204

t/t1006-cat-file.sh

@@ -140,15 +140,17 @@ test_expect_success '--batch-check without %(rest) considers whole line' '
 	test_cmp expect actual
 '
 
+test_oid_init
+
 tree_sha1=$(git write-tree)
-tree_size=33
+tree_size=$(($(test_oid rawsz) + 13))
 tree_pretty_content="100644 blob $hello_sha1	hello"
 
 run_tests 'tree' $tree_sha1 $tree_size "" "$tree_pretty_content"
 
 commit_message="Initial commit"
 commit_sha1=$(echo_without_newline "$commit_message" | git commit-tree $tree_sha1)
-commit_size=177
+commit_size=$(($(test_oid hexsz) + 137))
 commit_content="tree $tree_sha1
 author $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL> 0000000000 +0000
 committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 0000000000 +0000