PDFBOX-2407: Fix for "Non" stroking color space operators

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1635728 13f79535-47bb-0310-9956-ffa450edef68
PDFBOX-2462: Don't return char procs for missing char codes

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1635737 13f79535-47bb-0310-9956-ffa450edef68