mpatch: ensure fragment start isn't past the end of orig (SEC)
Caught by oss-fuzz fuzzer during development.
This defect is OVE-
20180430-0004. A CVE has not been obtained as of
this writing.
#require docutils gettext
Error: the current ro localization has some rst defects exposed by
moving pager to core. These two warnings about references are expected
until the localization is corrected.
$ $TESTDIR/check-gendoc ro
checking for parse errors
gendoc.txt:58: (WARNING/2) Inline interpreted text or phrase reference start-string without end-string.
gendoc.txt:58: (WARNING/2) Inline interpreted text or phrase reference start-string without end-string.