Move WeakPtrFactory in map_renderer.hpp (#2861)

include/mbgl/util/run_loop.hpp

@@ -137,6 +137,7 @@ private:
 
     std::unique_ptr<Impl> impl;
     ::mapbox::base::WeakPtrFactory<Scheduler> weakFactory{this};
+    // Do not add members here, see `WeakPtrFactory`
 };
 
 } // namespace util

platform/android/MapLibreAndroid/src/cpp/map_renderer.hpp

@@ -146,10 +146,12 @@ private:
     std::atomic<bool> destroyed{false};
 
     std::unique_ptr<SnapshotCallback> snapshotCallback;
-    mapbox::base::WeakPtrFactory<Scheduler> weakFactory{this};
 
     bool framebufferSizeChanged = false;
     bool swapBehaviorFlush = false;
+
+    mapbox::base::WeakPtrFactory<Scheduler> weakFactory{this};
+    // Do not add members here, see `WeakPtrFactory`
 };
 
 } // namespace android

platform/qt/src/utils/scheduler.hpp

@@ -39,6 +39,7 @@ private:
     std::atomic<std::size_t> pendingItems;
     std::queue<std::function<void()>> m_taskQueue;
     mapbox::base::WeakPtrFactory<Scheduler> weakFactory{this};
+    // Do not add members here, see `WeakPtrFactory`
 };
 
 } // namespace QMapLibre