[apparmor] [PATCH] fix output of dfa

[John Johansen]

On certain graphs the dfa graph dump output can become messed up as it isn't properly handling non-printing characters in the case of single character
output.  Drop the cast to signed character which messes up the output.

===================================================================
--- a/parser/libapparmor_re/regexp.y
+++ b/parser/libapparmor_re/regexp.y
@@ -1833,7 +1833,7 @@
 	    else {
 		os << "\t\"" << *i->first << "\" -> \"";
 		os << *j->second << "\" [" << endl;
-		os << "\t\tlabel=\"" << (char)j->first << "\"" << endl;
+		os << "\t\tlabel=\"" << j->first << "\"" << endl;
 		os << "\t]" << endl;
 	    }
 	}