Add missing break statement.

This looks like it was a merge issue from
https://partner-android-review.googlesource.com/#/c/213315

Change-Id: I6dfc4a48c7a3ffef09371a8f1eed784934db806c
diff --git a/src/com/android/services/telephony/TelephonyConnection.java b/src/com/android/services/telephony/TelephonyConnection.java
index 07cd7b5..3c9b508 100644
--- a/src/com/android/services/telephony/TelephonyConnection.java
+++ b/src/com/android/services/telephony/TelephonyConnection.java
@@ -137,6 +137,7 @@
                     if (isMultiParty) {
                         notifyConferenceStarted();
                     }
+                    break;
                 case MSG_CONFERENCE_MERGE_FAILED:
                     notifyConferenceMergeFailed();
                     break;