B06005 - cancelling getdir prompt

- Changed a cancelled chat direction to abort the chat -- it seemed odd
that the old behavior would sometimes take time, sometimes not, depending
on the previous direction.
- Documented the current spelleffects behavior of re-using the last
direction after a cancelled getdir() & added a message.

src/sounds.c

@@ -860,7 +860,10 @@ dochat()
 	return(1);
     }
 
-    (void) getdir("Talk to whom? (in what direction)");
+    if (!getdir("Talk to whom? (in what direction)")) {
+	/* decided not to chat */
+	return(0);
+    }
 
 #ifdef STEED
     if (u.usteed && u.dz > 0)

src/spell.c

@@ -814,7 +814,10 @@ boolean atme;
 	case SPE_STONE_TO_FLESH:
 		if (!(objects[pseudo->otyp].oc_dir == NODIR)) {
 			if (atme) u.dx = u.dy = u.dz = 0;
-			else (void) getdir((char *)0);
+			else if (!getdir((char *)0)) {
+			    /* getdir cancelled, re-use previous direction */
+			    pline_The("magical energy is released!");
+			}
 			if(!u.dx && !u.dy && !u.dz) {
 			    if ((damage = zapyourself(pseudo, TRUE)) != 0) {
 				char buf[BUFSZ];