Fix pyghmicons script crash on idle

After 10 minutes of idle, the wrong exception was caught.  Correct
it to correctly handle errno 11

Change-Id: I91feea97c3442dec1fc30bd813e99da05a1ef329

bin/pyghmicons

@@ -50,8 +50,9 @@ def _doinput():
         select.select((sys.stdin,), (), (), 600)
         try:
             data = sys.stdin.read()
-        except OSError:
-            continue
+        except (IOError, OSError) as e:
+            if e.errno == 11:
+                continue
         sol.send_data(data)