Don't update CPU freq/temp if not enabled

src/cpu.cpp

@@ -150,8 +150,6 @@ bool CPUStats::Init()
 //TODO take sampling interval into account?
 bool CPUStats::UpdateCPUData()
 {
-    CPUStats::UpdateCoreMhz();
-    CPUStats::UpdateCpuTemp();
     unsigned long long int usertime, nicetime, systemtime, idletime;
     unsigned long long int ioWait, irq, softIrq, steal, guest, guestnice;
     int cpuid = -1;

src/overlay.cpp

@@ -908,9 +908,15 @@ void update_hud_info(struct swapchain_stats& sw_stats, struct overlay_params& pa
    }
       if (sw_stats.last_fps_update) {
          if (elapsed >= params.fps_sampling_period) {
+
             if (params.enabled[OVERLAY_PARAM_ENABLED_cpu_stats]) {
                cpuStats.UpdateCPUData();
                sw_stats.total_cpu = cpuStats.GetCPUDataTotal().percent;
+
+               if (params.enabled[OVERLAY_PARAM_ENABLED_core_load])
+                  cpuStats.UpdateCoreMhz();
+               if (params.enabled[OVERLAY_PARAM_ENABLED_cpu_temp])
+                  cpuStats.UpdateCpuTemp();
             }
 
             if (params.enabled[OVERLAY_PARAM_ENABLED_gpu_stats]) {