modules/lcr: improved documentation of defunct_gw() function.

modules/lcr/README

@@ -841,10 +841,11 @@ if (!next_gw()) {
 
 4.3.  defunct_gw(period)
 
-   Defuncts gateway denoted by lcr_id_avp and defunct_gw_avp for a period
-   of seconds given as argument. Argument must be a positive integer
-   constant or a pseudo variable with positive integer value. Value of
-   defunct column in database is not updated.
+   Defuncts gateway denoted by lcr_id_avp and defunct_gw_avp (which were
+   set by previuos next_gw() call) for a period of seconds given as
+   argument. Argument must be a positive integer constant or a pseudo
+   variable with positive integer value. Value of defunct column in
+   database is not updated.
 
    Returns 1 on success and -1 in case of error (see syslog).
 

modules/lcr/doc/lcr_admin.xml

@@ -1077,6 +1077,7 @@ if (!next_gw()) {
 		</title>	
 		<para>
 		Defuncts gateway denoted by lcr_id_avp and defunct_gw_avp
+		(which were set by previuos next_gw() call)
 		for a period of seconds given as argument.  Argument 
 		must be a positive integer constant or a pseudo variable
 		with positive integer value.  Value of defunct column in