Fix build

src/jit/codegenarmarch.cpp

@@ -700,8 +700,8 @@ void CodeGen::genPutArgStk(GenTreePutArgStk* treeNode)
  // the xor ensures that only one of the two is setup, not both
  assert((varNode != nullptr) ^ (addrNode != nullptr));
 
- StructTypeLayout* layout = treeNode->gtLayout;
- int structSize = layout->GetSize();
+ StructTypeLayout* layout;
+ int structSize;
  bool isHfa;
 
  // This is the varNum for our load operations,
@@ -720,14 +720,18 @@ void CodeGen::genPutArgStk(GenTreePutArgStk* treeNode)
  assert(varDsc->lvType == TYP_STRUCT);
  assert(varDsc->lvOnFrame && !varDsc->lvRegister);
 
+#ifdef _TARGET_ARM_
+ layout = treeNode->gtLayout;
+#else // _TARGET_ARM64_
+ layout = varDsc->lvLayout;
+#endif // _TARGET_ARM64_
+ structSize = layout->GetSize();
+
  // This yields the roundUp size, but that is fine
  // as that is how much stack is allocated for this LclVar
  assert(structSize == varDsc->lvSize());
 
  isHfa = varDsc->lvIsHfa();
-#ifdef _TARGET_ARM64_
- assert(layout == varDsc->lvLayout);
-#endif // _TARGET_ARM_
  }
  else // addrNode is used
  {
@@ -747,10 +751,9 @@ void CodeGen::genPutArgStk(GenTreePutArgStk* treeNode)
  }
 #endif // _TARGET_ARM64_
 
- isHfa = compiler->IsHfa(layout->GetClass());
-#ifdef _TARGET_ARM64_
- assert(layout == source->AsObj()->gtLayout);
-#endif
+ layout = source->AsObj()->gtLayout;
+ structSize = layout->GetSize();
+ isHfa = compiler->IsHfa(layout->GetClass());
  }
 
  // If we have an HFA we can't have any GC pointers,