Fix reference leaks _interpchannels and _interpqueues modules

Author: aisk

Misc/NEWS.d/next/Library/2026-05-16-21-08-33.gh-issue-149921.I1yNML.rst

@@ -0,0 +1,2 @@
+Fix reference leaks in error paths of the :mod:`!_interpchannels` and
+:mod:`!_interpqueues` extension modules.

Modules/_interpchannelsmodule.c

@@ -2595,6 +2595,7 @@ _channelid_from_xid(_PyXIData_t *data)
     assert(mod != Py_None);
     module_state *state = get_module_state(mod);
     if (state == NULL) {
+        Py_DECREF(mod);
         return NULL;
     }
 

Modules/_interpqueuesmodule.c

@@ -1363,6 +1363,7 @@ _queueobj_from_xid(_PyXIData_t *data)
     if (mod == NULL) {
         mod = PyImport_ImportModule(MODULE_NAME_STR);
         if (mod == NULL) {
+            Py_DECREF(qidobj);
             return NULL;
         }
     }