refactor(topology): flush store entries before topology destroy

Author: mbroadst

lib/topologies/topology_base.js

@@ -390,18 +390,18 @@ class TopologyBase extends EventEmitter {
       this.s.sessionPool.endAllPooledSessions();
     }
 
+    // We need to wash out all stored processes
+    if (forceClosed === true) {
+      this.s.storeOptions.force = forceClosed;
+      this.s.store.flush();
+    }
+
     this.s.coreTopology.destroy(
       {
         force: typeof forceClosed === 'boolean' ? forceClosed : false
       },
       callback
     );
-
-    // We need to wash out all stored processes
-    if (forceClosed === true) {
-      this.s.storeOptions.force = forceClosed;
-      this.s.store.flush();
-    }
   }
 }