run_diff_{files,index}(): update calling convention.

diff --git a/fast-import.c b/fast-import.c
index f9cfc726371c34a175eecb6cbc218dcb300164b7..fd3b11757498d504b3954f70c602603d65277440 100644 (file)
--- a/fast-import.c
+++ b/fast-import.c
@@ -1667,8 +1667,10 @@ static void cmd_from(struct branch *b)
        if (strncmp("from ", command_buf.buf, 5))
                return;
 
-       if (b->last_commit)
-               die("Can't reinitailize branch %s", b->name);
+       if (b->branch_tree.tree) {
+               release_tree_content_recursive(b->branch_tree.tree);
+               b->branch_tree.tree = NULL;
+       }
 
        from = strchr(command_buf.buf, ' ') + 1;
        s = lookup_branch(from);
@@ -1936,7 +1938,9 @@ static void cmd_reset_branch(void)
        sp = strchr(command_buf.buf, ' ') + 1;
        b = lookup_branch(sp);
        if (b) {
-               b->last_commit = 0;
+               hashclr(b->sha1);
+               hashclr(b->branch_tree.versions[0].sha1);
+               hashclr(b->branch_tree.versions[1].sha1);
                if (b->branch_tree.tree) {
                        release_tree_content_recursive(b->branch_tree.tree);
                        b->branch_tree.tree = NULL;