pysss: Fix double free
The talloc context is removed in destructor.
==1695== Invalid read of size 4
==1695== at 0x1243D0CD: talloc_chunk_from_ptr (talloc.c:372)
==1695== by 0x1243D0CD: _talloc_free (talloc.c:1559)
==1695== by 0x117B18C3: PySssLocalObject_dealloc (pysss.c:836)
==1695== by 0x117B1AEE: PySssLocalObject_new (pysss.c:898)
==1695== by 0x4ED5522: type_call (typeobject.c:729)
==1695== by 0x4E7F902: PyObject_Call (abstract.c:2529)
==1695== by 0x4F15584: do_call (ceval.c:4328)
==1695== by 0x4F15584: call_function (ceval.c:4133)
==1695== by 0x4F15584: PyEval_EvalFrameEx (ceval.c:2753)
==1695== by 0x4F16BE5: fast_function (ceval.c:4196)
==1695== by 0x4F16BE5: call_function (ceval.c:4131)
==1695== by 0x4F16BE5: PyEval_EvalFrameEx (ceval.c:2753)
==1695== by 0x4F183FF: PyEval_EvalCodeEx (ceval.c:3342)
==1695== by 0x4EA46BC: function_call (funcobject.c:526)
==1695== by 0x4E7F902: PyObject_Call (abstract.c:2529)
==1695== by 0x4F1504F: ext_do_call (ceval.c:4423)
==1695== by 0x4F1504F: PyEval_EvalFrameEx (ceval.c:2792)
==1695== by 0x4F183FF: PyEval_EvalCodeEx (ceval.c:3342)
==1695== Address 0x112d4560 is 64 bytes inside a block of size 96 free'd
==1695== at 0x4C2ACE9: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==1695== by 0x1243D2F2: _talloc_free_internal (talloc.c:1057)
==1695== by 0x1243D2F2: _talloc_free (talloc.c:1581)
==1695== by 0x117B1ABF: PySssLocalObject_new (pysss.c:876)
==1695== by 0x4ED5522: type_call (typeobject.c:729)
==1695== by 0x4E7F902: PyObject_Call (abstract.c:2529)
==1695== by 0x4F15584: do_call (ceval.c:4328)
==1695== by 0x4F15584: call_function (ceval.c:4133)
==1695== by 0x4F15584: PyEval_EvalFrameEx (ceval.c:2753)
==1695== by 0x4F16BE5: fast_function (ceval.c:4196)
==1695== by 0x4F16BE5: call_function (ceval.c:4131)
==1695== by 0x4F16BE5: PyEval_EvalFrameEx (ceval.c:2753)
==1695== by 0x4F183FF: PyEval_EvalCodeEx (ceval.c:3342)
==1695== by 0x4EA46BC: function_call (funcobject.c:526)
==1695== by 0x4E7F902: PyObject_Call (abstract.c:2529)
==1695== by 0x4F1504F: ext_do_call (ceval.c:4423)
==1695== by 0x4F1504F: PyEval_EvalFrameEx (ceval.c:2792)
==1695== by 0x4F183FF: PyEval_EvalCodeEx (ceval.c:3342)
Reviewed-by: Pavel Reichl <preichl@redhat.com>
(cherry picked from commit 3cd7275c3c41a03eb65769c2bf4e472d1de7b8c0)