Abc label shows garbage <br> tags if text contains newlines at the end

[php4fan]

To reproduce:

1. Create an Abc label
2. Enter the text:

Foo bar

(note the at least two newline characters at the end)
3. Click Ok

Expected behavior
There are two possible sensible behaviors:
a) you trim all whitespace characters, including newlines, at the beginning and end of the text, so the saved text of the label would be effectively "Foo bar" with no trailing newline characters
b) you keep the text as is, and display it correctly, rendering the newline characters in exactly the same way you do when they are in the middle and not at the end of the text

Observed behavior
this: