replay: Simplify setting replay blockers

replay_add_blocker() takes an Error *.  All callers pass one created
like this:

    error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED, "some feature");

Folding this into replay_add_blocker() simplifies the callers, losing
a bit of generality we haven't needed in more than six years.

Since there are no other uses of macro QERR_REPLAY_NOT_SUPPORTED,
replace the remaining one by its expansion, and drop the macro.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230207075115.1525-10-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/replay/replay.c b/replay/replay.c
index 9a0dc1c..c39156c 100644
--- a/replay/replay.c
+++ b/replay/replay.c
@@ -376,8 +376,12 @@ void replay_finish(void)
     replay_mode = REPLAY_MODE_NONE;
 }
 
-void replay_add_blocker(Error *reason)
+void replay_add_blocker(const char *feature)
 {
+    Error *reason = NULL;
+
+    error_setg(&reason, "Record/replay feature is not supported for '%s'",
+               feature);
     replay_blockers = g_slist_prepend(replay_blockers, reason);
 }