diff: remove lazy config loading

There is no point to this. Either:

1. The program has already loaded git_diff_ui_config, in
which case this is a noop.
2. The program didn't, which means it is plumbing that
does not _want_ git_diff_ui_config to be loaded.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/diff.c b/diff.c
index 4a908b28af90e02e4eca8319c1ac51bb788a27c1..2c78d74a427aa04aba1403661c899083488e46f2 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -59,14 +59,6 @@ static struct ll_diff_driver {
        char *cmd;
 } *user_diff, **user_diff_tail;
 
-static void read_config_if_needed(void)
-{
-       if (!user_diff_tail) {
-               user_diff_tail = &user_diff;
-               git_config(git_diff_ui_config);
-       }
-}
-
 /*
  * Currently there is only "diff.<drivername>.command" variable;
  * because there are "diff.color.<slot>" variables, we are parsing
@@ -1822,7 +1814,6 @@ static const char *external_diff_attr(const char *name)
                    !ATTR_UNSET(value)) {
                        struct ll_diff_driver *drv;
 
-                       read_config_if_needed();
                        for (drv = user_diff; drv; drv = drv->next)
                                if (!strcmp(drv->name, value))
                                        return drv->cmd;