Remove default template parameter and move to typedef

Author: sandeepmistry

cores/arduino/RingBuffer.h

@@ -29,7 +29,7 @@
 // location from which to read.
 #define SERIAL_BUFFER_SIZE 64
 
-template <int N = SERIAL_BUFFER_SIZE>
+template <int N>
 class RingBufferT
 {
   public:
@@ -51,7 +51,7 @@ class RingBufferT
     int nextIndex(int index);
 };
 
-typedef RingBufferT<> RingBuffer;
+typedef RingBufferT<SERIAL_BUFFER_SIZE> RingBuffer;
 
 
 template <int N>