[Bug driver/79875] New: diagnostics: missing question mark after "did you mean"

["roland.illig at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79875

            Bug ID: 79875
           Summary: diagnostics: missing question mark after "did you
                    mean"
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: driver
          Assignee: unassigned at gcc dot gnu.org
          Reporter: roland.illig at gmx dot de
  Target Milestone: ---

from opts.c:

error_at (loc,
          "unrecognized argument to -f%ssanitize%s= option: %q.*s;"
          " did you mean %qs",

While fixing this, please grep the whole GCC source code whether there are
similar places.