Tweaked C++ BitInputStream class in case EOF is not -1.

Author: nayuki

cpp/BitIoStream.cpp

@@ -18,7 +18,7 @@ BitInputStream::BitInputStream(std::istream &in) :
 
 
 int BitInputStream::read() {
-	if (currentByte == -1)
+	if (currentByte == EOF)
 		return -1;
 	if (numBitsRemaining == 0) {
 		currentByte = input.get();  // Note: istream.get() returns int, not char

cpp/BitIoStream.hpp

@@ -23,7 +23,7 @@ class BitInputStream final {
 	// The underlying byte stream to read from.
 	private: std::istream &input;
 
-	// Either in the range [0x00, 0xFF] if bits are available, or -1 if end of stream is reached.
+	// Either in the range [0x00, 0xFF] if bits are available, or EOF if end of stream is reached.
 	private: int currentByte;
 
 	// Number of remaining bits in the current byte, always between 0 and 7 (inclusive).