checkstyle - adding fallthru to supress check

Author: stomaszek

openpdf-html/src/main/java/org/openpdf/css/parser/Lexer.java

@@ -938,6 +938,7 @@ void parseGlyph(Range r, GeneralPath gp, FlPoint pt) {
                     break;
                 case 30: // vhcurveto
                     hold = 4;
+                    //fallthru
                 case 31: // hvcurveto
                     for (i = 0; i < this.stackptr;) {
                         boolean hv = (((i + hold) & 4) == 0);