[compiler-rt] [scudo][NFC] Explicit type casting to avoid compiler warning (PR #83355)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: None (ChiaHungDuan)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/83355.diff


1 Files Affected:

- (modified) compiler-rt/lib/scudo/standalone/allocator_common.h (+1-1) 


``````````diff
diff --git a/compiler-rt/lib/scudo/standalone/allocator_common.h b/compiler-rt/lib/scudo/standalone/allocator_common.h
index 4d39956bf90503..c7c6035f241f45 100644
--- a/compiler-rt/lib/scudo/standalone/allocator_common.h
+++ b/compiler-rt/lib/scudo/standalone/allocator_common.h
@@ -53,7 +53,7 @@ template <class SizeClassAllocator> struct TransferBatch {
   void moveNToArray(CompactPtrT *Array, u16 N) {
     DCHECK_LE(N, Count);
     memcpy(Array, Batch + Count - N, sizeof(Batch[0]) * N);
-    Count -= N;
+    Count -= static_cast<u16>(Count - N);
   }
   u16 getCount() const { return Count; }
   bool isEmpty() const { return Count == 0U; }

``````````

</details>


https://github.com/llvm/llvm-project/pull/83355