Patch #1592072: fix docs for return value of PyErr_CheckSignals.  (backport from rev. 52666)
Patch #1592072: fix docs for return value of PyErr_CheckSignals.
 (backport from rev. 52666)

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