Fix an unused variable warning in release builds.

Bug: chromium:1203071
Change-Id: I32481d9918aa4a86510570dfb4997f7645f0df23
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226965
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77451}

src/base/utils/random-number-generator.cc

@@ -54,6 +54,7 @@ RandomNumberGenerator::RandomNumberGenerator() {
   DCHECK_EQ(0, result);
   result = rand_s(&second_half);
   DCHECK_EQ(0, result);
+  USE(result);
   SetSeed((static_cast<int64_t>(first_half) << 32) + second_half);
 #elif V8_OS_MACOSX || V8_OS_FREEBSD || V8_OS_OPENBSD
   // Despite its prefix suggests it is not RC4 algorithm anymore.