libwebm: v1.0.0.20

Change-Id: I8a93517762c0edecd59a38e2f4fc99566c7b2de5

mkvparser.cpp

@@ -21,7 +21,7 @@ void mkvparser::GetVersion(int& major, int& minor, int& build, int& revision)
     major = 1;
     minor = 0;
     build = 0;
-    revision = 19;
+    revision = 20;
 }
 
 long long mkvparser::ReadUInt(IMkvReader* pReader, long long pos, long& len)
@@ -7155,7 +7155,7 @@ void Cluster::LoadBlockEntries() const
         const long long element_size = cluster_stop - m_element_start;
         assert((m_element_size <= 0) || (m_element_size == element_size));
 
-        if (element_size <= 0)
+        if (m_element_size <= 0)
             m_element_size = element_size;
     }