[2.7] Fix misleading mentions of tp_size in comments (GH-9138)

Many type object initializations labeled a field "tp_size" in the
comment, but the name of that field is tp_basicsize..
(cherry picked from commit 0e0bc4e221f592f305d335faf5f8046484eb9238)

Co-authored-by: Peter Eisentraut <peter@eisentraut.org>
diff --git a/Modules/ossaudiodev.c b/Modules/ossaudiodev.c
index 284cc61..f833bb2 100644
--- a/Modules/ossaudiodev.c
+++ b/Modules/ossaudiodev.c
@@ -842,7 +842,7 @@
 static PyTypeObject OSSAudioType = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
     "ossaudiodev.oss_audio_device", /*tp_name*/
-    sizeof(oss_audio_t),        /*tp_size*/
+    sizeof(oss_audio_t),        /*tp_basicsize*/
     0,                          /*tp_itemsize*/
     /* methods */
     (destructor)oss_dealloc,    /*tp_dealloc*/
@@ -856,7 +856,7 @@
 static PyTypeObject OSSMixerType = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
     "ossaudiodev.oss_mixer_device", /*tp_name*/
-    sizeof(oss_mixer_t),            /*tp_size*/
+    sizeof(oss_mixer_t),            /*tp_basicsize*/
     0,                              /*tp_itemsize*/
     /* methods */
     (destructor)oss_mixer_dealloc,  /*tp_dealloc*/