[clang] Clarify some code based on static analysis complaints; NFC (PR #145679)

[Aaron Ballman via cfe-commits]

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@@ -589,8 +589,7 @@ void CGHLSLRuntime::initializeBufferFromBinding(const HLSLBufferDecl *BufDecl,
   auto *NonUniform = llvm::ConstantInt::get(Int1Ty, false);
   auto *Index = llvm::ConstantInt::get(CGM.IntTy, 0);
   auto *RangeSize = llvm::ConstantInt::get(CGM.IntTy, 1);
-  auto *Space =
-      llvm::ConstantInt::get(CGM.IntTy, RBA ? RBA->getSpaceNumber() : 0);
+  auto *Space = llvm::ConstantInt::get(CGM.IntTy, RBA->getSpaceNumber());
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AaronBallman wrote:

Sure! I added that.

https://github.com/llvm/llvm-project/pull/145679