[ASL2 PATCH] Update morse code character timing (#433)

An ASL2 change (from AllStarLink/ASL-Asterisk#19)
was not fully merged into the ASL3 source base.  That PR included an
correction to the morse code character timing, specifically the inter
character delay. This change updates the timing to match what's commonly
understood (the space between two letters is equal to three dots).

apps/app_rpt/rpt_channel.c

@@ -341,9 +341,9 @@ int send_morse(struct ast_channel *chan, char *string, int speed, int freq, int
 
 	/* Establish timing releationships */
 
-	dashtime = 3 * dottime;
+	dashtime = dottime * 3;
 	intralettertime = dottime;
-	interlettertime = dottime * 4;
+	interlettertime = dottime * 3;
 	interwordtime = dottime * 7;
 
 	for (; (*string) && (!res); string++) {