Update cpu_speed.c

system/cpu_speed.c

@@ -26,5 +26,13 @@ int wmain(void) {
 
     wprintf(L"CPU speed: %lu MHz\n", mhz);
 
+    r = RegCloseKey(key);
+
+    if (r != ERROR_SUCCESS) {
+
+        wprintf(L"Failed to close registry handle %ld", GetLastError());
+        return 1;
+    }
+    
     return 0;
 }