NormalizeWhitespace breaks multi-line comments

[kierenj]

Version Used:

4.12.0

Steps to Reproduce:
Parse this code:

        /**
         * 
         * Escape XML special characters
         */
        private String EscapeXML(String str)
        {
...

Call .NormalizeWhitespace().ToFullString() and observe the output.

Expected Behavior:

Something similar or identical to the input.

Actual Behavior:

        ///
        /// 
        /// Escape XML special characters
        //////private String EscapeXML(String str)
        {
...