Merge branch 'master' into 2264-feature-check-for-low-heap-before-adding-to-nodedb-was-reboot-loop-heap-too-low

src/mesh/NodeDB.cpp

@@ -490,6 +490,7 @@ bool NodeDB::saveProto(const char *filename, size_t protoSize, const pb_msgdesc_
         } else {
             okay = true;
         }
+        f.flush();
         f.close();
 
         // brief window of risk here ;-)