[Bug fortran/95918] gfortran.dg/char4-subscript.f90 fails for BE architectures

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95918

--- Comment #11 from David Edelsohn <dje at gcc dot gnu.org> ---
With the patch the testcase succeeds on both powerpc-ibm-aix7.2.0.0 (big
endian) and powerpc64-linux (little endian)