[OPENMP] Fix PR35152: Do not use getInvokeDest() function for EH checks.

The compiler may crash under some conditions if the getInvokeDest() is
used, but later it is not used. Fixed this problem in OpenMP.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@317227 91177308-0d34-0410-b5e6-96231b3b80d8