Merge cherrypicks of [7995446, 7995447, 7996042, 7996138, 7995448, 7995449, 7995789, 7995790, 7995450, 7996029, 7996030, 7996139, 7996140, 7996141, 7996142, 7996143, 7996144, 7995544, 7995545, 7995546, 7995547, 7995548, 7995549, 7995550, 7996145, 7996146, 7996032, 7996147, 7996148, 7996149, 7996150, 7994747, 7994748, 7995451, 7994749, 7994750, 7995966, 7995967, 7994751, 7996151, 7996152, 7996153] into pi-qpr3-b-release

Change-Id: If819ad03def2ccd7bed3c096bf46adfba1786449
diff --git a/libwebm/mkvparser/mkvparser.cc b/libwebm/mkvparser/mkvparser.cc
index 70c1f04..efd3545 100644
--- a/libwebm/mkvparser/mkvparser.cc
+++ b/libwebm/mkvparser/mkvparser.cc
@@ -4233,6 +4233,7 @@
         new (std::nothrow) ContentEncryption*[encryption_count];
     if (!encryption_entries_) {
       delete[] compression_entries_;
+      compression_entries_ = NULL;
       return -1;
     }
     encryption_entries_end_ = encryption_entries_;
@@ -4328,6 +4329,12 @@
         return status;
       }
 
+      // There should be only one settings element per content compression.
+      if (compression->settings != NULL) {
+        delete[] buf;
+        return E_FILE_FORMAT_INVALID;
+      }
+
       compression->settings = buf;
       compression->settings_len = buflen;
     }