Fix missing PyErr_NoMemory in typeobject.c

Author: ByteFlowing1337

Misc/NEWS.d/next/Core_and_Builtins/2026-06-17-15-59-57.gh-issue-151126.FEWx_Q.rst

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

Objects/typeobject.c

@@ -5492,6 +5492,7 @@ type_from_slots_or_spec(
     Py_ssize_t name_buf_len = strlen(it.name) + 1;
     _ht_tpname = PyMem_Malloc(name_buf_len);
     if (_ht_tpname == NULL) {
+        PyErr_NoMemory();
         goto finally;
     }
     memcpy(_ht_tpname, it.name, name_buf_len);