Bug 955465 - User icon overflows its rounded border, r=florian.

im/themes/blist.css

@@ -329,6 +329,7 @@ group[closed] .twisty {
 #userIcon {
   border: 2px solid rgba(0,0,0,0.15);
   border-radius: 5px;
+  overflow: hidden;
   max-width: 48px;
   max-height: 48px;
   width: 48px;

im/themes/conversation.css

@@ -46,6 +46,7 @@
 .userIcon {
   border: 2px solid rgba(0,0,0,0.15);
   border-radius: 5px;
+  overflow: hidden;
   max-width: 48px;
   max-height: 48px;
   width: 48px;