Clarify them while we're here.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
---
 scripts/qapi/events.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/qapi/events.py b/scripts/qapi/events.py
index 57e0939e963..599f3d1f564 100644
--- a/scripts/qapi/events.py
+++ b/scripts/qapi/events.py
@@ -44,8 +44,12 @@ def gen_event_send_decl(name: str,
                  proto=build_event_send_proto(name, arg_type, boxed))
 
 
-# Declare and initialize an object 'qapi' using parameters from build_params()
 def gen_param_var(typ: QAPISchemaObjectType) -> str:
+    """
+    Generate a struct variable holding the event parameters.
+
+    Initialize it with the function arguments defined in `gen_event_send`.
+    """
     assert not typ.variants
     ret = mcgen('''
     %(c_name)s param = {
-- 
2.26.2