Don't wait(interval) after last entry

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required (VERSION 3.6)
 project (mastorss
-         VERSION 0.8.0
+         VERSION 0.8.1
          LANGUAGES CXX
 )
 

src/mastorss.cpp

@@ -116,8 +116,11 @@ int main(int argc, char *argv[])
             return ret;
         }
 
+        if (rit != entries.rend())
+        {   // Only sleep if this is not the last entry
             sleep_for(seconds(config[profile]["interval"].asUInt64()));
         }
+    }
 
     // Write the new last_entry only if no error happened.
     write_config();