Use '==' in (IQ|Message|Presence)TypeFilter

instead of 'equals()'

smack-core/src/main/java/org/jivesoftware/smack/filter/IQTypeFilter.java

@@ -42,6 +42,6 @@ public class IQTypeFilter extends FlexiblePacketTypeFilter<IQ> {
 
     @Override
     protected boolean acceptSpecific(IQ iq) {
-        return iq.getType().equals(type);
+        return iq.getType() == type;
     }
 }

smack-core/src/main/java/org/jivesoftware/smack/filter/MessageTypeFilter.java

@@ -49,7 +49,7 @@ public class MessageTypeFilter extends FlexiblePacketTypeFilter<Message> {
 
     @Override
     protected boolean acceptSpecific(Message message) {
-        return message.getType().equals(this.type);
+        return message.getType() == type;
     }
 
 }

smack-core/src/main/java/org/jivesoftware/smack/filter/PresenceTypeFilter.java

@@ -43,6 +43,6 @@ public class PresenceTypeFilter extends FlexiblePacketTypeFilter<Presence> {
 
     @Override
     protected boolean acceptSpecific(Presence presence) {
-        return presence.getType().equals(type);
+        return presence.getType() == type;
     }
 }