[Bug tree-optimization/65443] Don't peel last iteration from loop in transform_to_exit_first_loop

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65443
Bug 65443 depends on bug 66442, which changed state.

Bug 66442 Summary: [6 regression] FAIL: gcc.dg/autopar/pr46885.c (test for excess errors)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66442

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED