Fix WiFIUdp missed std::nothrow

Author: TienHuyIoT

libraries/WiFi/src/WiFiUdp.cpp

@@ -42,7 +42,7 @@ uint8_t WiFiUDP::begin(IPAddress address, uint16_t port){
 
   server_port = port;
 
-  tx_buffer = new char[1460];
+  tx_buffer = new (std::nothrow) char[1460];
   if(!tx_buffer){
     log_e("could not create tx buffer: %d", errno);
     return 0;
@@ -134,7 +134,7 @@ int WiFiUDP::beginPacket(){
 
   // allocate tx_buffer if is necessary
   if(!tx_buffer){
-    tx_buffer = new char[1460];
+    tx_buffer = new (std::nothrow) char[1460];
     if(!tx_buffer){
       log_e("could not create tx buffer: %d", errno);
       return 0;