K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2018-06-14T22:31:30.225415Z
K 7
svn:log
V 308
Exit with an error if a linker hints file can't be found.

Continuing with a NULL hints variable just triggers a segfault later on.
The other error cases in this function all exit for an error rather than
warning.

Reviewed by:	imp
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D15579

END