Merge branch 'jc/maint-mergetool-read-fix' into maint

diff --git a/builtin/checkout.c b/builtin/checkout.c
index af1e7b579a83aef15e11c0c5dfa29447e485654c..ca855d716ccab1d1209638193e2f52e901acfba0 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -715,10 +715,12 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
        unsigned char rev[20];
        int flag;
        memset(&old, 0, sizeof(old));
-       old.path = resolve_ref("HEAD", rev, 0, &flag);
+       old.path = xstrdup(resolve_ref("HEAD", rev, 0, &flag));
        old.commit = lookup_commit_reference_gently(rev, 1);
-       if (!(flag & REF_ISSYMREF))
+       if (!(flag & REF_ISSYMREF)) {
+               free((char *)old.path);
                old.path = NULL;
+       }
 
        if (old.path && !prefixcmp(old.path, "refs/heads/"))
                old.name = old.path + strlen("refs/heads/");
@@ -741,6 +743,7 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
        update_refs_for_switch(opts, &old, new);
 
        ret = post_checkout_hook(old.commit, new->commit, 1);
+       free((char *)old.path);
        return ret || opts->writeout_error;
 }