[clang] [NFC] Remove unneeded nullptr checks after cast<> (PR #74674)

[Mike Rice via cfe-commits]

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@@ -6454,8 +6454,7 @@ ConstantAddress CodeGenModule::GetAddrOfGlobalTemporary(
       !EvalResult.hasSideEffects())
     Value = &EvalResult.Val;
 
-  LangAS AddrSpace =
-      VD ? GetGlobalVarAddressSpace(VD) : MaterializedType.getAddressSpace();
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mikerice1969 wrote:

@yxsamliu, you may have added this back in cbf647cc3a712. Do you know when/if the AddrSpace should be set from MaterializedType since it seems VD is always non-null here.

https://github.com/llvm/llvm-project/pull/74674