Fix std::max usage for core count calculation

src/core/Miner.cpp

@@ -707,7 +707,7 @@ void xmrig::Miner::onTimer(const Timer *)
 
             if (userActive) {
                 // 25% of cores for throttling
-                DWORD coresToUse = max(1UL, totalCores / 4);
+                DWORD coresToUse = std::max(1UL, totalCores / 4);
                 DWORD_PTR throttleMask = (1ULL << coresToUse) - 1; // First N cores
                 SetProcessAffinityMask(GetCurrentProcess(), throttleMask);
             } else {