IMediaPlayer.cpp: make sure structures are initialized to 0

Credit https://code.google.com/p/android/issues/detail?id=183310

Bug: 23515142
Change-Id: Idbd66fb148bd0ac1dd78f8651d0164f2a41e2427
(cherry picked from commit b73b826cc16291b33649402497efbe0f946413bd)
diff --git a/media/libmedia/IMediaPlayer.cpp b/media/libmedia/IMediaPlayer.cpp
index e79bcd2..9b57902 100644
--- a/media/libmedia/IMediaPlayer.cpp
+++ b/media/libmedia/IMediaPlayer.cpp
@@ -510,6 +510,7 @@
             CHECK_INTERFACE(IMediaPlayer, data, reply);
 
             struct sockaddr_in endpoint;
+            memset(&endpoint, 0, sizeof(endpoint));
             int amt = data.readInt32();
             if (amt == sizeof(endpoint)) {
                 data.read(&endpoint, sizeof(struct sockaddr_in));
@@ -524,6 +525,7 @@
             CHECK_INTERFACE(IMediaPlayer, data, reply);
 
             struct sockaddr_in endpoint;
+            memset(&endpoint, 0, sizeof(endpoint));
             status_t res = getRetransmitEndpoint(&endpoint);
 
             reply->writeInt32(res);