lib/sinatra/runner.rb in sinatra-contrib-4.0.0 vs lib/sinatra/runner.rb in sinatra-contrib-4.1.0

@@ -90,10 +90,10 @@
         end
       end
     end
 
     def log
-      @log ||= ''
+      @log ||= +''
       loop { @log << pipe.read_nonblock(1) }
     rescue Exception
       @log
     end