Fix SF #1676971, Complex OverflowError has a typo
diff --git a/Objects/complexobject.c b/Objects/complexobject.c
index 0d37fb2..4de1fb6 100644
--- a/Objects/complexobject.c
+++ b/Objects/complexobject.c
@@ -481,7 +481,7 @@
 	}
 	else if (errno == ERANGE) {
 		PyErr_SetString(PyExc_OverflowError,
-				"complex exponentiaion");
+				"complex exponentiation");
 		return NULL;
 	}
 	return PyComplex_FromCComplex(p);