Fix missing switch cases

Source/debug.cpp

@@ -829,6 +829,11 @@ bool GetDebugGridText(Point dungeonCoords, char *debugGridTextBuffer)
 	case DebugGridTextItem::dSpecial:
 		info = dSpecial[dungeonCoords.x][dungeonCoords.y];
 		break;
+	case DebugGridTextItem::dObject:
+		info = dObject[dungeonCoords.x][dungeonCoords.y];
+		break;
+	case DebugGridTextItem::None:
+		return false;
 	}
 	if (info == 0)
 		return false;

Source/items.cpp

@@ -4645,6 +4645,8 @@ void SpawnBoy(int lvl)
 			ivalue = mostValuablePlayerItem == nullptr ? 0 : mostValuablePlayerItem->_iIvalue;
 			break;
 		}
+		default:
+			app_fatal("Invalid item spawn");
 		}
 		ivalue = ivalue * 4 / 5; // avoids forced int > float > int conversion