Rename __unused struct members to include a namespace

Rename various spare fields in structs to include a namespace
This should avoid accidental clashes with uses of the __unused symbol
in upstream projects. eg currently it causes a compile error in dhcpcd 8.x
due to their re-use of the __unused symbol as a macro

This follows the style of glibc which does something equivalent

1 files changed, 5 insertions, 5 deletions

diff --git a/libc/sysdeps/linux/common/bits/msq.h b/libc/sysdeps/linux/common/bits/msq.h
index a1c3ea43d..b594cfff2 100644
--- a/libc/sysdeps/linux/common/bits/msq.h
+++ b/libc/sysdeps/linux/common/bits/msq.h
@@ -38,18 +38,18 @@ struct msqid_ds
 {
   struct ipc_perm msg_perm;	/* structure describing operation permission */
   __time_t msg_stime;		/* time of last msgsnd command */
-  unsigned long int __unused1;
+  unsigned long int __uclibc_unused1;
   __time_t msg_rtime;		/* time of last msgrcv command */
-  unsigned long int __unused2;
+  unsigned long int __uclibc_unused2;
   __time_t msg_ctime;		/* time of last change */
-  unsigned long int __unused3;
+  unsigned long int __uclibc_unused3;
   unsigned long int __msg_cbytes; /* current number of bytes on queue */
   msgqnum_t msg_qnum;		/* number of messages currently on queue */
   msglen_t msg_qbytes;		/* max number of bytes allowed on queue */
   __pid_t msg_lspid;		/* pid of last msgsnd() */
   __pid_t msg_lrpid;		/* pid of last msgrcv() */
-  unsigned long int __unused4;
-  unsigned long int __unused5;
+  unsigned long int __uclibc_unused4;
+  unsigned long int __uclibc_unused5;
 };
 
 #ifdef __USE_MISC