(get_line): Report error right away if I/O fails,

so that the proper errno value is used.

diff --git a/src/join.c b/src/join.c
index e82b66f..b4d1cbb 100644 (file)
--- a/src/join.c
+++ b/src/join.c
@@ -261,6 +261,8 @@ get_line (FILE *fp, struct line *line)
 
   if (! readlinebuffer (&line->buf, fp))
     {
+      if (ferror (fp))
+       error (EXIT_FAILURE, errno, _("read error"));
       free (line->buf.buffer);
       line->buf.buffer = NULL;
       return 0;