Remove warning for undefined print_state/1 function for p1_fsm processes (thanks Badlop).

Include a identity function as implementation of print_state/1.

src/ejabberd_s2s_out.erl

@@ -51,6 +51,7 @@
 	 handle_sync_event/4,
 	 handle_info/3,
 	 terminate/3,
+     print_state/1,
 	 code_change/4,
 	 test_get_addr_port/1,
 	 get_addr_port/1]).
@@ -875,6 +876,14 @@ terminate(Reason, StateName, StateData) ->
     end,
     ok.
 
+%%----------------------------------------------------------------------
+%% Func: print_state/1
+%% Purpose: Prepare the state to be printed on error log
+%% Returns: State to print
+%%----------------------------------------------------------------------
+print_state(State) ->
+    State.
+
 %%%----------------------------------------------------------------------
 %%% Internal functions
 %%%----------------------------------------------------------------------

src/ejabberd_service.erl

@@ -47,7 +47,8 @@
 	 handle_sync_event/4,
 	 code_change/4,
 	 handle_info/3,
-	 terminate/3]).
+	 terminate/3,
+     print_state/1]).
 
 -include("ejabberd.hrl").
 -include("jlib.hrl").
@@ -374,6 +375,14 @@ terminate(Reason, StateName, StateData) ->
     (StateData#state.sockmod):close(StateData#state.socket),
     ok.
 
+%%----------------------------------------------------------------------
+%% Func: print_state/1
+%% Purpose: Prepare the state to be printed on error log
+%% Returns: State to print
+%%----------------------------------------------------------------------
+print_state(State) ->
+    State.
+
 %%%----------------------------------------------------------------------
 %%% Internal functions
 %%%----------------------------------------------------------------------

src/odbc/ejabberd_odbc.erl

@@ -47,6 +47,7 @@
 	 handle_sync_event/4,
 	 handle_info/3,
 	 terminate/3,
+     print_state/1,
 	 code_change/4]).
 
 %% gen_fsm states
@@ -285,6 +286,13 @@ terminate(_Reason, _StateName, State) ->
     end,
     ok.
 
+%%----------------------------------------------------------------------
+%% Func: print_state/1
+%% Purpose: Prepare the state to be printed on error log
+%% Returns: State to print
+%%----------------------------------------------------------------------
+print_state(State) ->
+    State.
 %%%----------------------------------------------------------------------
 %%% Internal functions
 %%%----------------------------------------------------------------------