builtin/send-pack: fix leaking refspecs

We never free data associated with the assembled refspec in
git-send-pack(1), causing a memory leak. Fix this.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: pks-t

builtin/send-pack.c

@@ -338,5 +338,6 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 
 	free_refs(remote_refs);
 	free_refs(local_refs);
+	refspec_clear(&rs);
 	return ret;
 }

t/t5400-send-pack.sh

@@ -9,6 +9,7 @@ test_description='See why rewinding head breaks send-pack
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 cnt=64

t/t5401-update-hooks.sh

@@ -4,6 +4,8 @@
 #
 
 test_description='Test the update hook infrastructure.'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success setup '

t/t5408-send-pack-stdin.sh

@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='send-pack --stdin tests'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 create_ref () {

t/t5548-push-porcelain.sh

@@ -4,6 +4,7 @@
 #
 test_description='Test git push porcelain output'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 # Create commits in <repo> and assign each commit's oid to shell variables

t/t5812-proto-disable-http.sh

@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='test disabling of git-over-http in clone/fetch'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY/lib-proto-disable.sh"
 . "$TEST_DIRECTORY/lib-httpd.sh"