gh-151126: Add missing PyErr_NoMemory in _winapi module (#151154)

Author: sobolevn

Misc/NEWS.d/next/Core_and_Builtins/2026-06-09-10-28-30.gh-issue-151126.DKa6Sl.rst

@@ -1,3 +1,7 @@
 Fix a crash, when there's no memory left on a device,
-which happened in code compilation.
-Now it raises a proper :exc:`MemoryError`.
+which happened in:
+
+- code compilation
+- :func:`!_winapi.CreateProcess`
+
+Now these places raise proper :exc:`MemoryError` errors.

Modules/_winapi.c

@@ -1194,8 +1194,10 @@ gethandlelist(PyObject *mapping, const char *name, Py_ssize_t *size)
     }
 
     ret = PyMem_Malloc(*size);
-    if (ret == NULL)
+    if (ret == NULL) {
+        PyErr_NoMemory();
         goto cleanup;
+    }
 
     for (i = 0; i < PySequence_Fast_GET_SIZE(value_fast); i++) {
         ret[i] = PYNUM_TO_HANDLE(PySequence_Fast_GET_ITEM(value_fast, i));
@@ -1278,6 +1280,7 @@ getattributelist(PyObject *obj, const char *name, AttributeList *attribute_list)
     attribute_list->attribute_list = PyMem_Malloc(attribute_list_size);
     if (attribute_list->attribute_list == NULL) {
         ret = -1;
+        PyErr_NoMemory();
         goto cleanup;
     }