df: fix "blocks" translation in header

* src/df.c (get_header): Get the translation of "blocks" here,
rather than just marking the string for translation.
Fixes http://bugs.gnu.org/15054

1 files changed, 1 insertions, 1 deletions

diff --git a/src/df.c b/src/df.c
index c2c390e3a..949fe2fe3 100644
--- a/src/df.c
+++ b/src/df.c
@@ -539,7 +539,7 @@ get_header (void)
           char *num = human_readable (output_block_size, buf, opts, 1, 1);
 
           /* Reset the header back to the default in OUTPUT_MODE.  */
-          header = N_("blocks");
+          header = _("blocks");
 
           /* TRANSLATORS: this is the "1K-blocks" header in "df" output.  */
           if (asprintf (&cell, _("%s-%s"), num, header) == -1)