jabber_x_data_ok_cb does not treat \r as a newline in a multiline text field

[xnyhps]

​XEP-0004:

Data provided for fields of type "text-multi" SHOULD NOT contain any newlines (the \n and \r characters). Instead, the application SHOULD split the data into multiple strings (based on the newlines inserted by the platform), then specify each string as the XML character data of a distinct <value/> element

However, jabber_x_data_ok_cb splits on "\n" and completely ignores \r. In my opinion, it should split on \r\n, \r and \n (the last two only if they don't occur in the first, of course).

Attached is a patch which replaces "\r\n" with "\n" and '\r' with '\n' (in that order) before splitting.