initialize codec list before MediaCodec.getCodecInfo()

Bug: 17374217
Change-Id: I8e8fc3a34ec01afdf5fc577979010183971c878b
diff --git a/media/java/android/media/MediaCodecList.java b/media/java/android/media/MediaCodecList.java
index 85e9b16..0dcbd65 100644
--- a/media/java/android/media/MediaCodecList.java
+++ b/media/java/android/media/MediaCodecList.java
@@ -118,6 +118,7 @@
 
     /** @hide */
     public static MediaCodecInfo getInfoFor(String codec) {
+        initCodecList();
         return sAllCodecInfos[findCodecByName(codec)];
     }