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-event.py b/scripts/qapi-event.py
index 88b0620..7f238df 100644
--- a/scripts/qapi-event.py
+++ b/scripts/qapi-event.py
@@ -167,8 +167,7 @@
                         event_enum_name = event_enum_name)
 
     enum_decl = mcgen('''
-typedef enum %(event_enum_name)s
-{
+typedef enum %(event_enum_name)s {
 ''',
                       event_enum_name = event_enum_name)