Add missing check of PyDict_SetItem()'s return value in PyEval_EvalCodeEx()
CID 486647
Add missing check of PyDict_SetItem()'s return value in _PyImport_FindExtensionObject()
CID 486649
Check return value of PyType_Ready(&EncodingMapType)
CID 486654
Add missing check of PyDict_SetItem()'s return value
CID 486659
Add missing check of PyDict_Update()'s return value in _elementtree.c
CID 719637
Issue #18513: Add workaround for OS X 10.8 cexp bug that leads to wrong cmath.rect(0.0,-0.0) results.
Check return value of fstat() in  _PyImport_GetDynLoadFunc()
CID 486250
Check return value of flush_character_buffer()
CID 486663
Check return value of PyEval_GetGlobals() for NULL
CID 486814
Issue #17532: Prevent exception when changing key sets if Options menu is empty.