Updated all comments for while (!Serial) additions to serial-based examples

libraries/Ethernet/examples/TelnetClient/TelnetClient.ino

@@ -13,7 +13,7 @@
  * Ethernet shield attached to pins 10, 11, 12, 13
  
  created 14 Sep 2010
- modified 2 Apr 2012
+ modified 9 Apr 2012
  by Tom Igoe
  
  */
@@ -41,9 +41,10 @@ void setup() {
   Ethernet.begin(mac, ip);
  // Open serial communications and wait for port to open:
   Serial.begin(9600);
-  // this check is only needed on the Leonardo:
-  while (!Serial) ;
- ;
+   while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+
 
   // give the Ethernet shield a second to initialize:
   delay(1000);