Hi-lock lines up to right margin (Bug#15934)

* lisp/hi-lock.el (hi-lock-line-face-buffer): Change used regexp so
that a line terminating newline character is included in the match.
1 job for master in 3 minutes and 43 seconds (queued for 3 seconds)
Status Job ID Name Coverage
failed #3103


Name Stage Failure
test-all Test
Makefile:402: recipe for target 'xdisp.o' failed
make[2]: Leaving directory '/builds/emacs/emacs/src'
make[2]: *** [xdisp.o] Error 1
Makefile:424: recipe for target 'src' failed
make[1]: *** [src] Error 2
make[1]: Leaving directory '/builds/emacs/emacs'
Makefile:1117: recipe for target 'bootstrap' failed
make: *** [bootstrap] Error 2
ERROR: Job failed: exit code 1