musl: Fix O_LARGEFILE constant value.

This was accidentally set to 0 in upstream, but fixed in commit b8b729b.
If running with prior versions without that commit, this commit
effectively backports it.

Author: xbjfk

src/unix/linux_like/linux/musl/b64/riscv64/mod.rs

@@ -432,7 +432,7 @@ pub const SYS_landlock_restrict_self: c_long = 446;
 pub const O_APPEND: c_int = 1024;
 pub const O_DIRECT: c_int = 0x4000;
 pub const O_DIRECTORY: c_int = 0x10000;
-pub const O_LARGEFILE: c_int = 0;
+pub const O_LARGEFILE: c_int = 0o100000;
 pub const O_NOFOLLOW: c_int = 0x20000;
 pub const O_CREAT: c_int = 64;
 pub const O_EXCL: c_int = 128;

src/unix/linux_like/linux/musl/b64/x86_64/mod.rs

@@ -701,7 +701,7 @@ pub const MAP_32BIT: c_int = 0x0040;
 pub const O_APPEND: c_int = 1024;
 pub const O_DIRECT: c_int = 0x4000;
 pub const O_DIRECTORY: c_int = 0x10000;
-pub const O_LARGEFILE: c_int = 0;
+pub const O_LARGEFILE: c_int = 0o0100000;
 pub const O_NOFOLLOW: c_int = 0x20000;
 pub const O_CREAT: c_int = 64;
 pub const O_EXCL: c_int = 128;