PushbackInputStream.java (read): If there are characters in the buffer, don't also call super.read().

	* java/io/PushbackInputStream.java (read): If there are characters
	in the buffer, don't also call super.read().
	* java/io/PushbackReader.java (read): If there are characters in
	the buffer, don't also call super.read().

From-SVN: r34745