Merge "RTP: add a null-check in AudioStream.setDtmfType()."
diff --git a/java/android/net/rtp/AudioStream.java b/java/android/net/rtp/AudioStream.java
index d761214..b7874f7 100644
--- a/java/android/net/rtp/AudioStream.java
+++ b/java/android/net/rtp/AudioStream.java
@@ -158,7 +158,7 @@
             if (type < 96 || type > 127) {
                 throw new IllegalArgumentException("Invalid type");
             }
-            if (type == mCodec.type) {
+            if (mCodec != null && type == mCodec.type) {
                 throw new IllegalArgumentException("The type is used by codec");
             }
         }