K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2023-04-22T09:02:17.120537Z
K 7
svn:log
V 1078
libsa: make single bit bitfields unsigned to avoid clang 16 warning

Clang 16 introduced a warning about single bit bitfields in structs,
which is triggered by a declaration in libsa's tftp.c:

    stand/libsa/tftp.c:382:20: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
                                    h->islastblock = 1;     /* very short file */
                                                   ^ ~
    stand/libsa/tftp.c:432:18: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
                    h->islastblock = 1;     /* EOF */
                                   ^ ~

Signed one-bit bitfields can only have values -1 and 0, but the intent
here is to use the field as a boolean, so make it unsigned.

MFC after:	3 days

(cherry picked from commit 1a3ccb8f1552977e1b264e3b89d1fba8e717dad8)

Git Hash:   f65f23e90da89a517dada5a4f330b181833e7a6b
Git Author: dim@FreeBSD.org
END