inotail.c: Decrement n_units before calling tail_pipe_from_begin

Saves 2 lines of code

1 files changed, 2 insertions, 5 deletions

diff --git a/inotail.c b/inotail.c
index 483306e..2eef622 100644
--- a/inotail.c
+++ b/inotail.c
@@ -244,9 +244,6 @@ static int tail_pipe_from_begin(struct file_struct *f, unsigned long n_units, co
 	int bytes_read = 0;
 	char buf[BUFSIZ];
 
-	if (n_units)
-		n_units--;
-
 	while (n_units > 0) {
 		if ((bytes_read = read(f->fd, buf, BUFSIZ)) <= 0) {
 			if (bytes_read < 0 && (errno == EINTR || errno == EAGAIN))
@@ -295,7 +292,7 @@ static int tail_pipe_lines(struct file_struct *f, unsigned long n_lines)
 	const char *p;
 
 	if (from_begin)
-		return tail_pipe_from_begin(f, n_lines, M_LINES);
+		return tail_pipe_from_begin(f, n_lines - 1, M_LINES);
 
 	if (n_lines == 0)
 		return 0;
@@ -403,7 +400,7 @@ static int tail_pipe_bytes(struct file_struct *f, unsigned long n_bytes)
 	unsigned long i = 0;		/* Index into buffer */
 
 	if (from_begin)
-		return tail_pipe_from_begin(f, n_bytes, M_BYTES);
+		return tail_pipe_from_begin(f, n_bytes - 1, M_BYTES);
 
 	/* XXX: Needed? */
 	if (n_bytes == 0)