Remove non-existing overrides of Close() and GetBuffer() for PCL version

Author: mythz

src/ServiceStack.Text/RecyclableMemoryStream.cs

@@ -940,7 +940,11 @@ protected override void Dispose(bool disposing)
         /// <summary>
         /// Equivalent to Dispose
         /// </summary>
+#if !PCL
         public override void Close()
+#else
+        public void Close()
+#endif
         {
             this.Dispose(true);
         }
@@ -1061,7 +1065,11 @@ public override bool CanWrite
         /// <remarks>IMPORTANT: Doing a Write() after calling GetBuffer() invalidates the buffer. The old buffer is held onto
         /// until Dispose is called, but the next time GetBuffer() is called, a new buffer from the pool will be required.</remarks>
         /// <exception cref="ObjectDisposedException">Object has been disposed</exception>
+#if !PCL
         public override byte[] GetBuffer()
+#else
+        public byte[] GetBuffer()
+#endif
         {
             this.CheckDisposed();