Javadoc fixes

Change-Id: Id23ed2d576b2222194153be9d043ca5acafe67ae
diff --git a/utils/misc/src/main/java/org/onlab/packet/IGMPMembership.java b/utils/misc/src/main/java/org/onlab/packet/IGMPMembership.java
index 174bd6f..495e283 100644
--- a/utils/misc/src/main/java/org/onlab/packet/IGMPMembership.java
+++ b/utils/misc/src/main/java/org/onlab/packet/IGMPMembership.java
@@ -78,8 +78,8 @@
      *
      * @param bb the ByteBuffer wrapping the serialized message.  The position of the
      *           ByteBuffer should be pointing at the head of either message type.
-     * @return
-     * @throws DeserializationException
+     * @return IGMP Group
+     * @throws DeserializationException if deserialization fails
      */
     public IGMPGroup deserialize(ByteBuffer bb) throws DeserializationException {
 
@@ -155,4 +155,4 @@
         result = prime * result + this.sources.hashCode();
         return result;
     }
-}
\ No newline at end of file
+}
diff --git a/utils/misc/src/main/java/org/onlab/packet/IGMPQuery.java b/utils/misc/src/main/java/org/onlab/packet/IGMPQuery.java
index 378ca10..bb53eba 100644
--- a/utils/misc/src/main/java/org/onlab/packet/IGMPQuery.java
+++ b/utils/misc/src/main/java/org/onlab/packet/IGMPQuery.java
@@ -63,7 +63,7 @@
     /**
      * Get the Querier Robustness Variable.
      *
-     * @return
+     * @return querier robustness value
      */
     public byte getQrv() {
         return qrv;
@@ -72,7 +72,7 @@
     /**
      * Set the Querier Robustness Variable. Default is 2.
      *
-     * @param qrv
+     * @param qrv new querier robustness value
      */
     public void setQrv(byte qrv) {
         this.qrv = qrv;
@@ -199,4 +199,4 @@
         result = prime * result + this.sources.hashCode();
         return result;
     }
-}
\ No newline at end of file
+}