util: better match true std::atomic semantics

exosphere/program/source/secmon_exception_handler.cpp

@@ -22,7 +22,7 @@ namespace ams::secmon {
 
         constexpr inline uintptr_t PMC = MemoryRegionVirtualDevicePmc.GetAddress();
 
-        constinit util::Atomic<bool> g_is_locked{false};
+        constinit util::Atomic<bool> g_is_locked = false;
 
     }
 

exosphere/program/source/smc/secmon_smc_se_lock.cpp

@@ -21,7 +21,7 @@ namespace ams::secmon::smc {
 
     namespace {
 
-        constinit util::Atomic<bool> g_is_locked{false};
+        constinit util::Atomic<bool> g_is_locked = false;
 
         ALWAYS_INLINE bool TryLockSecurityEngineImpl() {
             bool value = false;