not keep freed pointer of uart handler

Links2004 · Links2004 · commit 28e6f3314216 · 2016-02-22T18:24:10.000+01:00
diff --git a/cores/esp8266/HardwareSerial.cpp b/cores/esp8266/HardwareSerial.cpp
@@ -56,6 +56,7 @@ void HardwareSerial::end()
     }
 
     uart_uninit(_uart);
+    _uart = NULL;
 }
 
 void HardwareSerial::swap(uint8_t tx_pin)

Original file line number	Diff line number	Diff line change
`@@ -56,6 +56,7 @@ void HardwareSerial::end()`
`56`	`56`	`}`
`57`	`57`
`58`	`58`	`uart_uninit(_uart);`
	`59`	`+ _uart = NULL;`
`59`	`60`	`}`
`60`	`61`
`61`	`62`	`void HardwareSerial::swap(uint8_t tx_pin)`