analyzer: fix -fdump-analyzer

This patch fixes a bug with -fdump-analyzer, which is meant to write
purely a dumpfile, but was erroneously sending part of the dump to
stderr.

gcc/analyzer/ChangeLog:
	* engine.cc (exploded_graph::get_or_create_node): Dump the
	program_state to the pp, rather than to stderr.

gcc/analyzer/ChangeLog

 2020-02-24  David Malcolm  <dmalcolm@redhat.com>
 
+	* engine.cc (exploded_graph::get_or_create_node): Dump the
+	program_state to the pp, rather than to stderr.
+
+2020-02-24  David Malcolm  <dmalcolm@redhat.com>
+
 	PR analyzer/93032
 	* sm.cc (make_checkers): Require the "taint" checker to be
 	explicitly enabled.

gcc/analyzer/engine.cc

@@ -1866,7 +1866,7 @@ exploded_graph::get_or_create_node (const program_point &point,
       logger->end_log_line ();
       logger->start_log_line ();
       pp_string (pp, "state: ");
-      state.dump (m_ext_state, true);
+      state.dump_to_pp (m_ext_state, true, pp);
       logger->end_log_line ();
     }