Bugfix: Incorrect information is printed on certain errors.

Bugfix: Incorrect information is printed on certain errors.

Remove unused line variable.

The f_fss_count_lines() function appends to the calculated length variable.
The number is not being reset.
This results in each iteration adding to the previous:
  Line number 1, count = 1.
  Line number 2, count = 3.
  Line number 3, count = 6.
  etc...

Reset the line number on each pass of the loop to get the correct line number.

An error message is printing "1" when it should be printing "2".

The "%Q" should be used instead of "%s" for the static string.

Replace "parameter" with "Content" to be consistent with other error messages.