K 10
svn:author
V 6
grehan
K 8
svn:date
V 27
2015-02-23T22:31:39.704044Z
K 7
svn:log
V 162
Don't close a block context if it couldn't be opened,
for example if the backing file doesn't exist,
avoiding a null deref.

Reviewed by:	neel
MFC after:	1 week.

END