fix(c): add type cast to notice receiver callback

Necessary starting from Cython 3.0b1

diff --git a/psycopg_c/psycopg_c/pq/pgconn.pyx b/psycopg_c/psycopg_c/pq/pgconn.pyx
index 5c5a9112909b98506a26f038cbbbafe527f1b8eb..c6ca22b39cd0195d497d4c866b14b15016a72430 100644 (file)
--- a/psycopg_c/psycopg_c/pq/pgconn.pyx
+++ b/psycopg_c/psycopg_c/pq/pgconn.pyx
@@ -35,7 +35,8 @@ cdef class PGconn:
         cdef PGconn rv = PGconn.__new__(PGconn)
         rv._pgconn_ptr = ptr
 
-        libpq.PQsetNoticeReceiver(ptr, notice_receiver, <void *>rv)
+        libpq.PQsetNoticeReceiver(
+            ptr, <libpq.PQnoticeReceiver>notice_receiver, <void *>rv)
         return rv
 
     def __cinit__(self):