Kyle Mestery 425f5c7aba Handle errors from run_ofctl() when dumping flows
The function dump_flows_for_table() calls run_ofctl(). If this occurs during an OVS
restart, run_ofctl() will return None. dump_flows_for_table() needs to realize this
and not try to call splitlines() on a None object.

Change-Id: Ide26028656e634113f955dfc89569149d4d5b306
Closes-Bug: #1324659
2014-05-29 20:41:31 +00:00
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