[llvm] [Offload] Check for initialization (PR #144370)

[Ross Brunton via llvm-commits]

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@@ -27,6 +27,7 @@ struct OffloadConfig {
   bool ValidationEnabled = true;
 };
 
+bool &offloadInited();
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RossBrunton wrote:

I agree. I was thinking that this would end up being a field inside that struct but a null check makes more sense. I'll work on that tomorrow and rebase this on top of it.

https://github.com/llvm/llvm-project/pull/144370