tree dab0b5d3704708e1dbe79e4e138a077b9090a4a2
parent c1b71b0c03df575c72ea413b2f2c27a7a477c05a
author Peter Crosthwaite <peter.crosthwaite@xilinx.com> 1371547139 +1000
committer Anthony Liguori <aliguori@us.ibm.com> 1373471625 -0500

qom: Fix class cast of NULL classes

Its clear from the implementation that class casting is supposed to work
with a NULL class argument. Guard all dereferences of the class argument
against NULL accordingly.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 94cd5ba46b74eea289a7e582635820c1c54e66fa.1371546907.git.peter.crosthwaite@xilinx.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>