Temporarily disable the indirect-goto.c test.

llvm r212077 causes this test to fail. We need to reorder some passes and
possibly make other changes to reenable the optimization being tested here.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212091 91177308-0d34-0410-b5e6-96231b3b80d8