version 1.4.3, handle empty schedule tables

Author: Koryphon

README.md

@@ -1,4 +1,4 @@
-[![GitHub release](https://img.shields.io/github/release/Locoduino/ScheduleTable.svg)](https://github.com/Locoduino/ScheduleTable/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/Locoduino/ScheduleTable/1.4.1.svg)](https://github.com/Locoduino/ScheduleTable/compare/1.4.1...master) [![Build Status](https://travis-ci.org/Locoduino/ScheduleTable.svg?branch=master)](https://travis-ci.org/Locoduino/ScheduleTable)
+[![GitHub release](https://img.shields.io/github/release/Locoduino/ScheduleTable.svg)](https://github.com/Locoduino/ScheduleTable/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/Locoduino/ScheduleTable/1.4.3.svg)](https://github.com/Locoduino/ScheduleTable/compare/1.4.3...master) [![Build Status](https://travis-ci.org/Locoduino/ScheduleTable.svg?branch=master)](https://travis-ci.org/Locoduino/ScheduleTable)
 
 # ScheduleTable
 

library.properties

@@ -1,5 +1,5 @@
 name=ScheduleTable
-version=1.4.2
+version=1.4.3
 author=Jean-Luc - Locoduino
 maintainer=Jean-Luc - Locoduino
 sentence=This library allows to schedule multiple actions along time.

src/ScheduleTable.cpp

@@ -114,7 +114,7 @@ void ScheduleTable::at(
  */
 void ScheduleTable::updateIt()
 {
-  if (mState != SCHEDULETABLE_STOPPED) {
+  if (mState != SCHEDULETABLE_STOPPED && mSize > 0) {
     uint32_t currentDate = millis();
     uint32_t offsetDate = currentDate - mOrigin;
     ScheduleTableActionSlot *slots = storage();