500 errors when viewing issues with certain award emoji
For example: https://gitlab.com/gitlab-org/gitlab-ce/issues/13723
Sentry error: https://sentry.gitlap.com/gitlab/gitlabcom/issues/23540/
NoMethodError: undefined method `[]' for nil:NilClass
from lib/gitlab/emoji.rb:50:in `gl_emoji_tag'
from app/helpers/emoji_helper.rb:3:in `emoji_icon'
from app/views/award_emoji/_awards_block.html.haml:7:in `block in _app_views_award_emoji__awards_block_html_haml___4485269268566943734_69858327369160'
from app/views/award_emoji/_awards_block.html.haml:3:in `each'
from app/views/award_emoji/_awards_block.html.haml:3:in `_app_views_award_emoji__awards_block_html_haml___4485269268566943734_69858327369160'
from action_view/template.rb:145:in `block in render'
from active_support/notifications.rb:166:in `instrument'
from action_view/template.rb:333:in `instrument'
from action_view/template.rb:143:in `render'
from action_view/renderer/partial_renderer.rb:339:in `render_partial'
from action_view/renderer/partial_renderer.rb:310:in `block in render'
from action_view/renderer/abstract_renderer.rb:39:in `block in instrument'
from active_support/notifications.rb:166:in `instrument'
from action_view/renderer/abstract_renderer.rb:39:in `instrument'
from action_view/renderer/partial_renderer.rb:309:in `render'
from action_view/renderer/renderer.rb:51:in `render_partial'
from action_view/helpers/rendering_helper.rb:35:in `render'
from app/views/projects/issues/show.html.haml:77:in `_app_views_projects_issues_show_html_haml__3087883984741692289_69858317056780'