memleak

[kurtbrose]

@kurt: mem leak in faststat: ==1281== 51,200 bytes in 50 blocks are definitely lost in loss record 10,692 of 10,821
==1281== at 0x4C24600: malloc (vg_replace_malloc.c:296)
==1281== by 0x46892F: PyMem_Malloc (object.c:2324)
==1281== by 0xFE10D2E: faststat_Stats_new (_faststat.c:222)
==1281== by 0x48A9F1: type_call (typeobject.c:721)
==1281== by 0x422DC2: PyObject_Call (abstract.c:2529)
==1281== by 0x4E123C: do_call (ceval.c:4239)
==1281== by 0x4E05FE: call_function (ceval.c:4044)
==1281== by 0x4DAC79: PyEval_EvalFrameEx (ceval.c:2666)
==1281== by 0x4DD9C9: PyEval_EvalCodeEx (ceval.c:3253)
==1281== by 0x4E0A02: fast_function (ceval.c:4117)
==1281== by 0x4E05E5: call_function (ceval.c:4042)
==1281== by 0x4DAC79: PyEval_EvalFrameEx (ceval.c:2666)
==1281== by 0x4DD9C9: PyEval_EvalCodeEx (ceval.c:3253)
==1281== by 0x56F5D4: function_call (funcobject.c:526)
==1281== by 0x422DC2: PyObject_Call (abstract.c:2529)
==1281== by 0x42DFF0: instancemethod_call (classobject.c:2578)
==1281== by 0x422DC2: PyObject_Call (abstract.c:2529)
==1281== by 0x49DAFC: slot_tp_init (typeobject.c:5663)
==1281== by 0x48AAE3: type_call (typeobject.c:735)
==1281== by 0x422DC2: PyObject_Call (abstract.c:2529)