[clang] clang/OpenCL: Fix special casing OpenCL in call emission (PR #138864)

[Matt Arsenault via cfe-commits]

arsenm wrote:

### Merge activity

* **May 9, 8:13 AM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/138864).


https://github.com/llvm/llvm-project/pull/138864