Osier Yang 2a3a725c33 virsh: Fix regression of vol-resize
Introduced by commit 1daa4ba33acf. vshCommandOptStringReq returns
0 on *success* or the option is not required && not present, both
are right result. Error out when returning 0 is not correct.
the caller, it doesn't have to check wether it
2013-05-24 16:55:39 +08:00
..
2012-12-07 14:21:25 +01:00
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