fix: category icon in topic.tpl to match others

templates/topic.tpl

@@ -20,13 +20,10 @@
 
 			<div class="topic-info clearfix">
 				<div class="category-item inline-block">
-					{{{ if category.icon }}}
-					<div role="presentation" class="icon pull-left" style="{{{ if category.bgColor }}}background-color: {category.bgColor};{{{end}}}; {{{ if category.color}}}color: {category.color};{{{end}}}">
+					<div role="presentation" class="icon pull-left" style="{function.generateCategoryBackground, category}">
 						<i class="fa fa-fw {category.icon}"></i>
 					</div>
-					{{{ end }}}
 					<a href="{config.relative_path}/category/{category.slug}">{category.name}</a>
-
 				</div>
 
 				<div class="tags tag-list inline-block hidden-xs">