devel/llvm15: fix backport of llvm19 fixes

There was a missing line in the patch causing part of it to be ignored.

PR: 285195
Submitted by: milios@ccsys.com
Fixes: ce2f720d96cd devel/llvm15: backport flang fixes for llvm19

(cherry picked from commit 50eaa5a64eb72b760ae74c8254c3f23a9c534063)