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, 2 insertions, 2 deletions

diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c
index 29aed184c..0be29b7ce 100644
--- a/archival/libunarchive/get_header_tar.c
+++ b/archival/libunarchive/get_header_tar.c
@@ -138,12 +138,12 @@ char get_header_tar(archive_handle_t *archive_handle)
                 /* tar gz/bz autodetect: check for gz/bz2 magic.
                  * If it is the very first block, and we see the magic,
                  * we can switch to get_header_tar_gz/bz2/lzma().
-                 * Needs seekable fd. I wish recv(MSG_PEEK) would work
+                 * Needs seekable fd. I wish recv(MSG_PEEK) works
                  * on any fd... */
                 if (not_first)
                         goto err;
 #if ENABLE_FEATURE_TAR_GZIP
-                if (tar.name[0] == 0x1f && tar.name[1] == 0x8b) { /* gzip */
+                if (tar.name[0] == 0x1f && tar.name[1] == (char)0x8b) { /* gzip */
                         get_header_ptr = get_header_tar_gz;
                 } else
 #endif