fix: windows build

Author: not-matthias

examples/google_benchmark_cmake/memory_bench.hpp

@@ -141,7 +141,7 @@ static void BM_Vector_PushBack(benchmark::State& state) {
   for (auto _ : state) {
     std::vector<int> vec;
     for (size_t i = 0; i < count; ++i) {
-      vec.push_back(i);
+      vec.push_back(static_cast<int>(i));
     }
     benchmark::DoNotOptimize(vec);
     benchmark::ClobberMemory();
@@ -157,7 +157,7 @@ static void BM_Vector_Reserve(benchmark::State& state) {
     std::vector<int> vec;
     vec.reserve(count);
     for (size_t i = 0; i < count; ++i) {
-      vec.push_back(i);
+      vec.push_back(static_cast<int>(i));
     }
     benchmark::DoNotOptimize(vec);
     benchmark::ClobberMemory();