Intermittent: flatten_css_imports,rewrite_css default limit 2

[jeffkaufman]

Potentially related to #89:

TEST: flatten_css_imports,rewrite_css default limit
run_wget_with_args http://localhost:8050/mod_pagespeed_example/flatten_css_imports.html?ModPagespeedFilters=flatten_css_imports,rewrite_css
     check run_wget_with_args http://localhost:8050/mod_pagespeed_example/flatten_css_imports.html?ModPagespeedFilters=flatten_css_imports,rewrite_css
wget -H -p -S -o /tmp/mod_pagespeed_test.jefftk/fetched_directory/wget_output.txt -nd -P /tmp/mod_pagespeed_test.jefftk/fetched_directory -e robots=off --header=X-PSA-Blocking-Rewrite:psatest http://localhost:8050/mod_pagespeed_example/flatten_css_imports.html?ModPagespeedFilters=flatten_css_imports,rewrite_css
bad buffer in yy_scan_bytes()
     failure at line 696
FAIL.

[jeffkaufman]

haven't seen this in months