qapi: Generated code cleanup

Clean up white-space, brace placement, and superfluous #ifdef
QAPI_TYPES_BUILTIN_CLEANUP_DEF.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
index 8bf84a7..890ce5d 100644
--- a/scripts/qapi-commands.py
+++ b/scripts/qapi-commands.py
@@ -218,6 +218,7 @@
         ret += mcgen('''
 
     (void)args;
+
 ''')
 
     ret += gen_sync_call(name, args, ret_type)