Patches #1298449 and #1298499: Add some missing checks for error
returns in cStringIO.c.  Thanks to Andrew Bennetts.

This must be a backport candidate.
diff --git a/Misc/ACKS b/Misc/ACKS
index bc9ee2b..c1cb855 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -50,6 +50,7 @@
 Thomas Bellman
 Juan M. Bello Rivas
 Alexander Belopolsky
+Andrew Bennetts
 Andy Bensky
 Michel Van den Bergh
 Eric Beser