Added UNSAFE keyword to syntax highlighting.

git-svn-id: https://svn.inf.ethz.ch/svn/lecturers/a2/trunk@7512 8c9fc860-2736-0410-a75d-ab315db34111

source/SyntaxHighlighter.XML

@@ -173,6 +173,7 @@
 					UNTRACED
 					UNCHECKED
 					UNCOOPERATIVE
+					UNSAFE
 				</Group>
 				<Group style="Debug">
 					KernelLog