Bugfix: reload was not working properly

src/rdb/rdb/rdb.cc

@@ -1762,7 +1762,7 @@ read_db_from_layout (rdb::Database *db, tl::InputStream &is)
 }
 
 void
-Database::load (const std::string &fn)
+Database::load (std::string fn)
 {
   tl::log << "Loading RDB from " << fn;
 

src/rdb/rdb/rdb.h

@@ -2455,8 +2455,10 @@ public:
    *  @brief Load the database from a file
    *
    *  Note: This clears the existing database.
+   *  The argument intentionally is a copy, so we can call
+   *  "load (this->filename ())" for reloading.
    */
-  void load (const std::string &filename);
+  void load (std::string filename);
 
   /**
    *  @brief Applies the attributes from a different database