Dear all,

as reported by Martin Liška, a sanitized compiler hits an uninitialized stride
value when simplifying CSHIFT in testcase gfortran.dg/simplify_cshift_1.f90.
Committed as obvious after confirmation in the PR by Martin that the attached
patch fixes the issue.

commit r12-7771-g774ab2edcb5f3a24ed3a5cffd1143bd49a69f1ee

Thanks,
Harald