Index: Modules/_pickle.c
===================================================================
--- Modules/_pickle.c	(revision 67298)
+++ Modules/_pickle.c	(working copy)
@@ -486,11 +486,13 @@
         PyErr_SetString(PyExc_ValueError,
                         "read() from the underlying stream did not"
                         "return bytes");
+        Py_DECREF(data);
         return -1;
     }
 
     if (PyBytes_GET_SIZE(data) != n) {
         PyErr_SetNone(PyExc_EOFError);
+        Py_DECREF(data);
         return -1;
     }