apply Janet's lint catches to trunk

src/dog.c

@@ -374,7 +374,8 @@ boolean with_you;
 		    if (xlocale && ylocale)
 			    place_object(obj, xlocale, ylocale);
 		    else if (rloco(obj)) {
-			get_obj_location(obj, &xlocale, &ylocale, 0);
+			if (!get_obj_location(obj, &xlocale, &ylocale, 0))
+			    impossible("Can't find relocated object.");
 		    }
 		}
 		corpse = mkcorpstat(CORPSE, (struct monst *)0, mtmp->data,

src/eat.c

@@ -894,7 +894,7 @@ register int pm;
 		if (dmgtype(ptr, AD_STUN) || dmgtype(ptr, AD_HALU) ||
 		    pm == PM_VIOLET_FUNGUS) {
 			pline ("Oh wow!  Great stuff!");
-			make_hallucinated(HHallucination + 200,FALSE,0L);
+			(void) make_hallucinated(HHallucination + 200,FALSE,0L);
 		}
 		if(is_giant(ptr)) gainstr((struct obj *)0, 0);
 

src/polyself.c

@@ -329,7 +329,8 @@ boolean forcecontrol;
 	}
 	if (is_pool(u.ux,u.uy) && was_floating && !(Levitation || Flying) &&
 		!breathless(youmonst.data) && !amphibious(youmonst.data) &&
-		!Swimming) drown();
+		!Swimming)
+	    (void) drown();
 }
 
 /* (try to) make a mntmp monster out of the player */