K 10
svn:author
V 7
delphij
K 8
svn:date
V 27
2015-08-31T05:57:26.141079Z
K 7
svn:log
V 138
Constify opt_f and opt_t and eliminate unneeded copying.  This fixes
memory leaks.

Reported by:	clang static analyzer
MFC after:	2 weeks

END