Fix #4824 - Content blocker whitelisting broken (#4825)
Fix #4824 - Content blocker whitelisting broken (#4825)

The file was expected to end in '}]', a simple newline or space would
break this.
flodolo/firefox-ios,Acidburn0zzz/firefox-ios,st3fan/firefox-ios,mozilla-mobile/firefox-ios,AaronMT/firefox-ios,flodolo/firefox-ios,Acidburn0zzz/firefox-ios,AaronMT/firefox-ios,StYaphet/firefox-ios,Bunn/firefox-ios,Acidburn0zzz/firefox-ios,StYaphet/firefox-ios,AaronMT/firefox-ios,justindarc/firefox-ios,justindarc/firefox-ios,mozilla-mobile/firefox-ios,Acidburn0zzz/firefox-ios,mozilla-mobile/firefox-ios,Acidburn0zzz/firefox-ios,StYaphet/firefox-ios,st3fan/firefox-ios,flodolo/firefox-ios,Acidburn0zzz/firefox-ios,mozilla-mobile/firefox-ios,garvankeeley/firefox-ios,st3fan/firefox-ios,st3fan/firefox-ios,garvankeeley/firefox-ios,Acidburn0zzz/firefox-ios,mkaply/firefox-ios,mozilla-mobile/firefox-ios,StYaphet/firefox-ios,AaronMT/firefox-ios,garvankeeley/firefox-ios,garvankeeley/firefox-ios,mkaply/firefox-ios,AaronMT/firefox-ios,AaronMT/firefox-ios,garvankeeley/firefox-ios,justindarc/firefox-ios,st3fan/firefox-ios,st3fan/firefox-ios,Acidburn0zzz/firefox-ios,Bunn/firefox-ios,AaronMT/firefox-ios,Bunn/firefox-ios,mozilla-mobile/firefox-ios,flodolo/firefox-ios,justindarc/firefox-ios,StYaphet/firefox-ios,StYaphet/firefox-ios,flodolo/firefox-ios,garvankeeley/firefox-ios,StYaphet/firefox-ios,mkaply/firefox-ios,mkaply/firefox-ios,st3fan/firefox-ios,Bunn/firefox-ios,justindarc/firefox-ios,justindarc/firefox-ios,mkaply/firefox-ios,Bunn/firefox-ios,mkaply/firefox-ios,flodolo/firefox-ios,Bunn/firefox-ios,flodolo/firefox-ios,mozilla-mobile/firefox-ios,Bunn/firefox-ios,justindarc/firefox-ios,mkaply/firefox-ios,StYaphet/firefox-ios,st3fan/firefox-ios,garvankeeley/firefox-ios