am d7f9473d: am 1817ed30: Merge "Update CodedOutputByteBufferNano to properly handle a malformed surrogate pair with a buffer too small to output a potentially well formed surrogate pair. This behavior mimics that of the ByteBuffer based methods."

* commit 'd7f9473d9e2684e9dfe54db5b32eea6b43bbcc82':
  Update CodedOutputByteBufferNano to properly handle a malformed surrogate pair with a buffer too small to output a potentially well formed surrogate pair. This behavior mimics that of the ByteBuffer based methods.