CPU (Windows): handles zero temperature data and refactors value use

Fixes #1960

Author: CarterLi

src/detection/cpu/cpu_windows.c

@@ -102,12 +102,16 @@ const char* detectThermalTemp(double* result)
         if (pCounterData->dwDataSize == sizeof(int32_t))
         {
             DWORD* pCounterIds = (DWORD*)(pMultiCounters + 1);
+            int32_t value = *(int32_t*)(pCounterData + 1);
+            if (value == 0)
+                return "Temperature data is zero";
+
             switch (pCounterIds[iCounter]) {
             case 0: // Temperature
-                *result = *(int32_t*)(pCounterData + 1) - 273;
+                *result = value - 273;
                 break;
             case 3: // High Precision Temperature
-                *result = *(int32_t*)(pCounterData + 1) / 10.0 - 273;
+                *result = value / 10.0 - 273;
                 break;
             }
         }