Add JNI references for PacketSocketAddress.

Also remove an outdated comment.

Change-Id: If0da380f78c1e77963953d8e64737d0f22c90fad
diff --git a/JniConstants.cpp b/JniConstants.cpp
index 9ae7871..a07466d 100644
--- a/JniConstants.cpp
+++ b/JniConstants.cpp
@@ -55,6 +55,7 @@
 jclass JniConstants::objectClass;
 jclass JniConstants::objectArrayClass;
 jclass JniConstants::outputStreamClass;
+jclass JniConstants::packetSocketAddressClass;
 jclass JniConstants::parsePositionClass;
 jclass JniConstants::patternSyntaxExceptionClass;
 jclass JniConstants::realToStringClass;
@@ -121,6 +122,7 @@
     objectClass = findClass(env, "java/lang/Object");
     objectArrayClass = findClass(env, "[Ljava/lang/Object;");
     outputStreamClass = findClass(env, "java/io/OutputStream");
+    packetSocketAddressClass = findClass(env, "android/system/PacketSocketAddress");
     parsePositionClass = findClass(env, "java/text/ParsePosition");
     patternSyntaxExceptionClass = findClass(env, "java/util/regex/PatternSyntaxException");
     realToStringClass = findClass(env, "java/lang/RealToString");