[glibc] elf: Fix tunconf.c build with clang

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0113b90a91b3bf30b0aa3a0017ba77e7fabe58dd

commit 0113b90a91b3bf30b0aa3a0017ba77e7fabe58dd
Author: Adhemerval Zanella <[email protected]>
Date:   Tue Aug 11 09:30:06 2026 -0300

    elf: Fix tunconf.c build with clang
    
    clang enables -Wsingle-bit-bitfield-constant-conversion with -Werror
    and it triggers:
    
    tunconf.c:338:32: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
      338 |       entry->value_is_negative = 1;
    
    Change both value_is_negative and value_was_parsed to unsigned.
    
    Checked on x86_64-linux-gnu and i686-linux-gnu.

Diff:
---
 elf/tunconf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/elf/tunconf.c b/elf/tunconf.c
index c27b50b1de..d4b2e541b5 100644
--- a/elf/tunconf.c
+++ b/elf/tunconf.c
@@ -66,8 +66,8 @@ struct tunable_entry_int {
   bool exclude_secure:1;
   bool exclude_nonsecure:1;
   int tunable_id;
-  int value_is_negative:1;
-  int value_was_parsed:1;
+  unsigned int value_is_negative:1;
+  unsigned int value_was_parsed:1;
   unsigned long long value_ull;
   signed long long value_sll;
   long filter_flags;