[PATCH v2 07/15] unpack-file: fix ancient leak in create_temp_file()

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Fix a leak that's been with us since 3407bb4940c (Add "unpack-file"
helper that unpacks a sha1 blob into a tmpfile., 2005-04-18). See
00c8fd493af (cat-file: use streaming API to print blobs, 2012-03-07)
for prior art which shows the same API pattern, i.e. free()-ing the
result of read_object_file() after it's used.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 builtin/unpack-file.c        | 1 +
 t/t6060-merge-index.sh       | 2 ++
 t/t6401-merge-criss-cross.sh | 2 ++
 t/t6406-merge-attr.sh        | 1 +
 t/t6407-merge-binary.sh      | 1 +
 t/t7605-merge-resolve.sh     | 1 +
 6 files changed, 8 insertions(+)

diff --git a/builtin/unpack-file.c b/builtin/unpack-file.c
index 9e8119dd354..88de32b7d7e 100644
--- a/builtin/unpack-file.c
+++ b/builtin/unpack-file.c
@@ -19,6 +19,7 @@ static char *create_temp_file(struct object_id *oid)
 	if (write_in_full(fd, buf, size) < 0)
 		die_errno("unable to write temp-file");
 	close(fd);
+	free(buf);
 	return path;
 }
 
diff --git a/t/t6060-merge-index.sh b/t/t6060-merge-index.sh
index ed449abe552..1a8b64cce18 100755
--- a/t/t6060-merge-index.sh
+++ b/t/t6060-merge-index.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='basic git merge-index / git-merge-one-file tests'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup diverging branches' '
diff --git a/t/t6401-merge-criss-cross.sh b/t/t6401-merge-criss-cross.sh
index 9d5e992878f..1962310408b 100755
--- a/t/t6401-merge-criss-cross.sh
+++ b/t/t6401-merge-criss-cross.sh
@@ -8,6 +8,8 @@
 
 
 test_description='Test criss-cross merge'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'prepare repository' '
diff --git a/t/t6406-merge-attr.sh b/t/t6406-merge-attr.sh
index 8650a88c40a..5e4e4dd6d9e 100755
--- a/t/t6406-merge-attr.sh
+++ b/t/t6406-merge-attr.sh
@@ -8,6 +8,7 @@ test_description='per path merge controlled by merge attribute'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success setup '
diff --git a/t/t6407-merge-binary.sh b/t/t6407-merge-binary.sh
index e8a28717cec..0753fc95f45 100755
--- a/t/t6407-merge-binary.sh
+++ b/t/t6407-merge-binary.sh
@@ -5,6 +5,7 @@ test_description='ask merge-recursive to merge binary files'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success setup '
diff --git a/t/t7605-merge-resolve.sh b/t/t7605-merge-resolve.sh
index 5d56c385464..62d935d31c2 100755
--- a/t/t7605-merge-resolve.sh
+++ b/t/t7605-merge-resolve.sh
@@ -4,6 +4,7 @@ test_description='git merge
 
 Testing the resolve strategy.'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '
-- 
2.38.0.1467.g709fbdff1a9