Fixes recursion bug in disambiguate_in().

[ohcount] / test / detect_files / fortranfree.f

! -*- F90 -*-
program fortranfreecheck
!     Simple check.  Not valid fixed form thanks to code starting in first column.
    write(*,*) 2 + &
        & 2
    goto 22
 22   write(*,*) 'bar'
end program fortranfreecheck