Fix AudioAttributes.setContentType

Test: build
Change-Id: Icfafeb3069010bf73c3d3e00f19c62c5fbf0e437
diff --git a/media/java/android/media/AudioAttributes.java b/media/java/android/media/AudioAttributes.java
index f1325ce..4f23cca 100644
--- a/media/java/android/media/AudioAttributes.java
+++ b/media/java/android/media/AudioAttributes.java
@@ -595,10 +595,10 @@
                 case CONTENT_TYPE_MUSIC:
                 case CONTENT_TYPE_SONIFICATION:
                 case CONTENT_TYPE_SPEECH:
-                     mContentType = contentType;
-                     break;
+                    mContentType = contentType;
+                    break;
                 default:
-                     mUsage = CONTENT_TYPE_UNKNOWN;
+                    mContentType = CONTENT_TYPE_UNKNOWN;
             }
             return this;
         }