fixing disabled line wrapping for HTML

[bendman]

This pull request fixes issue #342

This is also an alternative to the pull request #423, added to maintain backwards compatibility and more complete tests (string and number values).

The check in that pull request states within it that when wrap_line_length and max_char are undefined, set wrap_line_length to undefined (even though it already is). This loses the backwards compatibility with 1.3.4 where max_char overwrote wrap_line_length if it was 0 or undefined.

This issue started because the conditional updated in commit 132fc95, although more complete (checking undefined and 0), reversed the logic from !== undefined to === undefined.

[bitwiseman]

Heh. LGTM. I can repro the problem on the website currently using your test, and I can see it passing with your change.

Thanks.