Show in inventory which monster a leash is attached to

doc/fixes36.1

@@ -282,6 +282,7 @@ when poly'd into a hider and engulfed, attempt to hide via #monster was blocked
 	but feedback said "can't hide while held" rather than "while engulfed"
 various monster/object/food/gold/trap detections were inconsistent in how they
 	behaved if performed while engulfed or underwater
+show in inventory which monster a leash is attached to
 
 
 Fixes to Post-3.6.0 Problems that Were Exposed Via git Repository

src/objnam.c

@@ -908,7 +908,8 @@ boolean with_price;
             break;
         }
         if (obj->otyp == LEASH && obj->leashmon != 0) {
-            Strcat(bp, " (in use)");
+            Sprintf(eos(bp), " (attached to %s)",
+                    a_monnam(find_mid(obj->leashmon, FM_FMON)));
             break;
         }
         if (obj->otyp == CANDELABRUM_OF_INVOCATION) {