[core] Back port changes for correct GL context in Map::onLowMemory()

This ports changes in
https://github.com/mapbox/mapbox-gl-native/pull/6972 to this version
of the map.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/mbgl/map/map.cpp b/src/mbgl/map/map.cpp
index 24c39fe243..6b9c4b4d5b 100644
--- a/src/mbgl/map/map.cpp
+++ b/src/mbgl/map/map.cpp
@@ -833,7 +833,9 @@ void Map::setSourceTileCacheSize(size_t size) {
 }
 
 void Map::onLowMemory() {
+    impl->view.activate();
     impl->store.performCleanup();
+    impl->view.deactivate();
     if (!impl->style) return;
     impl->style->onLowMemory();
     impl->view.invalidate();