[llvm] [Offload] Refactor device/platform info queries (PR #146345)

[Jan Patrick Lehr via llvm-commits]

================
@@ -277,35 +277,42 @@ Error olGetPlatformInfoSize_impl(ol_platform_handle_t Platform,
 Error olGetDeviceInfoImplDetail(ol_device_handle_t Device,
                                 ol_device_info_t PropName, size_t PropSize,
                                 void *PropValue, size_t *PropSizeRet) {
+  assert(Device != OffloadContext::get().HostDevice());
+  InfoWriter Info(PropSize, PropValue, PropSizeRet);
 
-  ReturnHelper ReturnValue(PropSize, PropValue, PropSizeRet);
+  auto MakeError = [&](ErrorCode Code, StringRef Err) {
----------------
jplehr wrote:

```suggestion
  auto makeError = [&](ErrorCode Code, StringRef Err) {
```

Here and later, probably also lower case, as it is technically a function.

https://github.com/llvm/llvm-project/pull/146345