fixes arduino#103 Misleadingly 'else' clause

Author: Fabian Schuette

Diff for: cores/arduino/USB/USBCore.cpp

@@ -684,10 +684,14 @@ static void USB_ISR(void)
                     // Send the endpoint status
                     // Check if the endpoint if currently halted
                     if( isEndpointHalt == 1 )
-    				UDD_Send8(EP0, 1); // TODO
+                    {
+                        UDD_Send8(EP0, 1); // TODO
+                    }
                     else
-    				UDD_Send8(EP0, 0); // TODO
-	    			UDD_Send8(EP0, 0);
+                    {
+                        UDD_Send8(EP0, 0); // TODO
+                    }
+                    UDD_Send8(EP0, 0);
                 }
 			}
 			else if (CLEAR_FEATURE == r)