Merge pull request #2353 from Shailesh351/patch-1

[FIX] Channel Freeze Issue

Author: philipbrito

app/src/main/java/chat/rocket/android/helper/MessageParser.kt

@@ -70,7 +70,9 @@ class MessageParser @Inject constructor(
 
         message.mentions?.forEach {
             val mention = getMention(it)
-            mentions.add(mention)
+            if (mention.isNotEmpty()) {
+                mentions.add(mention)
+            }
             if (it.username != null) {
                 text = text.replace("@${it.username}", mention)
             }