[GSoC][PATCH v7 16/26] stash: replace spawning a "read-tree" process

[Paul-Sebastian Ungureanu]

Instead of spawning a child process, make use of `reset_tree()`
function already implemented in `stash-helper.c`.
---
 builtin/stash--helper.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/builtin/stash--helper.c b/builtin/stash--helper.c
index a4e57899b..887b78d05 100644
--- a/builtin/stash--helper.c
+++ b/builtin/stash--helper.c
@@ -984,21 +984,18 @@ static int stash_patch(struct stash_info *info, const 
char **argv)
 static int stash_working_tree(struct stash_info *info, const char **argv)
 {
        int ret = 0;
-       struct child_process cp0 = CHILD_PROCESS_INIT;
        struct child_process cp1 = CHILD_PROCESS_INIT;
        struct child_process cp2 = CHILD_PROCESS_INIT;
        struct child_process cp3 = CHILD_PROCESS_INIT;
        struct strbuf out1 = STRBUF_INIT;
        struct strbuf out3 = STRBUF_INIT;
 
-       cp0.git_cmd = 1;
-       argv_array_push(&cp0.args, "read-tree");
-       argv_array_pushf(&cp0.args, "--index-output=%s", stash_index_path.buf);
-       argv_array_pushl(&cp0.args, "-m", oid_to_hex(&info->i_tree), NULL);
-       if (run_command(&cp0)) {
+       set_alternate_index_output(stash_index_path.buf);
+       if (reset_tree(&info->i_tree, 0, 0)) {
                ret = -1;
                goto done;
        }
+       set_alternate_index_output(".git/index");
 
        cp1.git_cmd = 1;
        argv_array_pushl(&cp1.args, "diff-index", "--name-only", "-z",
-- 
2.18.0.573.g56500d98f