stop device correctly

face.cpp

@@ -286,10 +286,9 @@ int Loop()
             }
         }
 
-        if (device->is_streaming())
-            device->stop();
 
-        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+        //std::this_thread::sleep_for(std::chrono::milliseconds(100));
 
         for (int j = 0; j < 4; ++j)
         {
@@ -297,6 +296,10 @@ int Loop()
             if (device->is_stream_enabled(s)) device->disable_stream(s);
         }
 
+
+        if (device->is_streaming())
+            device->stop();
+
         looping = false;
         return 0;
     }