[3.15] gh-151126: Add missing PyErr_NoMemory in _winapi.c (GH-151588) (#152182)

gh-151126: Add missing `PyErr_NoMemory` in `_winapi.c` (GH-151588)
(cherry picked from commit a580029)

Co-authored-by: Ivy Xu <fakeshadow1337@gmail.com>
Co-authored-by: sobolevn <mail@sobolevn.me>

Author: 3 people

Misc/NEWS.d/next/Core_and_Builtins/2026-06-17-16-46-07.gh-issue-151126.vhTL0T.rst

@@ -0,0 +1,2 @@
+Avoid possible crash in ``_winapi.c`` where a device has no memory left. Now
+it properly raises a :exc:`MemoryError`. Patch by Ivy Xu.

Modules/_winapi.c

@@ -1677,6 +1677,9 @@ _winapi_GetShortPathName_impl(PyObject *module, LPCWSTR path)
             }
             PyMem_Free((void *)buffer);
         }
+        else {
+            PyErr_NoMemory();
+        }
     } else {
         PyErr_SetFromWindowsErr(0);
     }
@@ -2387,6 +2390,7 @@ _winapi_BatchedWaitForMultipleObjects_impl(PyObject *module,
     while (i < nhandles) {
         BatchedWaitData *data = (BatchedWaitData*)PyMem_Malloc(sizeof(BatchedWaitData));
         if (!data) {
+            PyErr_NoMemory();
             goto error;
         }
         thread_data[thread_count++] = data;