more -Wall warning fixes from Cristian Ionescu-Idbohrn.

This time it resulted in small code changes:

function                                             old     new   delta
nexpr                                                820     828      +8
tail_main                                           1200    1202      +2
wrapf                                                166     167      +1
parse_mount_options                                  227     209     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/1 up/down: 11/-18)             Total: -7 bytes

1 files changed, 1 insertions, 1 deletions

diff --git a/miscutils/eject.c b/miscutils/eject.c
index 91cf98f5f..aa22a3a42 100644
--- a/miscutils/eject.c
+++ b/miscutils/eject.c
@@ -38,7 +38,7 @@ static void eject_scsi(const char *dev)
                 { START_STOP, 0, 0, 0, 2, 0 }
         };
 
-        int i;
+        unsigned i;
         unsigned char sense_buffer[32];
         unsigned char inqBuff[2];
         sg_io_hdr_t io_hdr;