[Core] Fix handling of library mappings if target does not exist (closes

 #58 by @pigen).

needrestart

@@ -454,8 +454,8 @@ if(defined($opt_l)) {
  $nrconf{skip_mapfiles} == -1) {
  print STDERR "$LOGPREF #$pid uses non-existing $path\n" if($nrconf{verbosity} > 1);
  $restart++;
- last;
  }
+ last;
  }
 
  # get on-disk info