[patch] error message is not escaped correctly

[moo]

fix:

graphviz/graphviz.py

@@ -380 +383 @@
         buf.write('<div id="content" class="error"><div class="message"> \n\
                    <strong>Graphviz macro processor has detected an error. Please fix the problem before continuing.</strong> \n\
                    <pre>%s</pre> \n\
-                   </div></div>' % msg)
+                   </div></div>' % escape(msg))
         self.log.error(msg)
         return buf

[Peter Kropf]

(In [1132]) Changed version number to 0.6.5. Escaped the error message in show_err(). Fixes #574.