qapi: Use returned bool to check for failure (again)

Commit 012d4c96e2 changed the visitor functions taking Error ** to
return bool instead of void, and the commits following it used the new
return value to simplify error checking.  Since then a few more uses
in need of the same treatment crept in.  Do that.  All pretty
mechanical except for

* balloon_stats_get_all()

  This is basically the same transformation commit 012d4c96e2 applied
  to the virtual walk example in include/qapi/visitor.h.

* set_max_queue_size()

  Additionally replace "goto end of function" by return.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-10-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 546b703..fa69b6f 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1782,12 +1782,9 @@ static void pc_machine_set_max_fw_size(Object *obj, Visitor *v,
                                        Error **errp)
 {
     PCMachineState *pcms = PC_MACHINE(obj);
-    Error *error = NULL;
     uint64_t value;
 
-    visit_type_size(v, name, &value, &error);
-    if (error) {
-        error_propagate(errp, error);
+    if (!visit_type_size(v, name, &value, errp)) {
         return;
     }