fix #H4706 - non-zero hit points for poison death

For "the poison was deadly" against hero, hit points were set to -1
(which gets displayed as 0 when shown) but the status lines weren't
being updated, so stale positive HP value was visible during final
disclosure.

src/attrib.c

@@ -272,6 +272,7 @@ boolean thrown_weapon; /* thrown weapons are less deadly */
     if (i == 0 && typ != A_CHA) {
         /* instant kill */
         u.uhp = -1;
+        context.botl = TRUE;
         pline_The("poison was deadly...");
     } else if (i > 5) {
         /* HP damage; more likely--but less severe--with missiles */

src/end.c

@@ -922,6 +922,18 @@ int how;
             return;
         }
     }
+    if (program_state.panicking
+#ifdef HANGUPHANDLING
+        || program_state.done_hup
+#endif
+        ) {
+        /* skip status update if panicking or disconnected */
+        context.botl = context.botlx = FALSE;
+    } else {
+        /* otherwise force full status update */
+        context.botlx = TRUE;
+        bot();
+    }
 
     if (how == ASCENDED || (!killer.name[0] && how == GENOCIDED))
         killer.format = NO_KILLER_PREFIX;