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, 4 insertions, 1 deletions

diff --git a/util-linux/mdev.c b/util-linux/mdev.c
index 4fff20dcd..14aa593f5 100644
--- a/util-linux/mdev.c
+++ b/util-linux/mdev.c
@@ -120,8 +120,11 @@ static void make_device(char *path, int delete)
 
                                 /* If not this device, skip rest of line */
                                 /* (regexec returns whole pattern as "range" 0) */
-                                if (result || off[0].rm_so || off[0].rm_eo != strlen(device_name))
+                                if (result || off[0].rm_so
+                                 || ((int)off[0].rm_eo != (int)strlen(device_name))
+                                ) {
                                         goto next_line;
+                                }
                         }
 
                         /* This line matches: stop parsing the file