Fix warning when compiling socketmodule.c with VS2010 VS2010 defineds the old errno constants in addition to the WSA* ones.
Fix warning when compiling socketmodule.c with VS2010
VS2010 defineds the old errno constants in addition to the WSA* ones.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator