Use update constructor for AudioGroup.

Test: basic sanity
Bug: 140872785
Merged-in: Ie5bdca10cd80b4b7d0241f9b1b4afdebca8aeb04
Change-Id: Ie5bdca10cd80b4b7d0241f9b1b4afdebca8aeb04
(cherry picked from commit a261dcd8cd8c0aaaa8e5604e95bca8b4d85ecb02)
diff --git a/tests/cts/net/src/android/net/rtp/cts/AudioGroupTest.java b/tests/cts/net/src/android/net/rtp/cts/AudioGroupTest.java
index 1bd7fad..fee8621 100644
--- a/tests/cts/net/src/android/net/rtp/cts/AudioGroupTest.java
+++ b/tests/cts/net/src/android/net/rtp/cts/AudioGroupTest.java
@@ -62,7 +62,7 @@
         mSocketB.connect(mStreamB.getLocalAddress(), mStreamB.getLocalPort());
         mStreamB.associate(mSocketB.getLocalAddress(), mSocketB.getLocalPort());
 
-        mGroup = new AudioGroup();
+        mGroup = new AudioGroup(mContext);
     }
 
     @Override