[MSan] Update type for MsanMetadataPtrForLoadN and MsanMetadataPtrForStoreN (#135040)

Changed last parameter type for `MsanMetadataPtrForLoadN` and
`MsanMetadataPtrForStoreN` from `i64` to `IntptrTy` to keep it
consistent with call in `getShadowOriginPtrKernelNoVec`

Co-authored-by: Kamil Kashapov <[email protected]>

Author: k-kashapov

llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp

@@ -846,9 +846,9 @@ void MemorySanitizer::createKernelApi(Module &M, const TargetLibraryInfo &TLI) {
   }
 
   MsanMetadataPtrForLoadN = getOrInsertMsanMetadataFunction(
-      M, "__msan_metadata_ptr_for_load_n", PtrTy, IRB.getInt64Ty());
+      M, "__msan_metadata_ptr_for_load_n", PtrTy, IntptrTy);
   MsanMetadataPtrForStoreN = getOrInsertMsanMetadataFunction(
-      M, "__msan_metadata_ptr_for_store_n", PtrTy, IRB.getInt64Ty());
+      M, "__msan_metadata_ptr_for_store_n", PtrTy, IntptrTy);
 
   // Functions for poisoning and unpoisoning memory.
   MsanPoisonAllocaFn = M.getOrInsertFunction(