Bump patch version to 0.2.57

Author: gnzlbg

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libc"
-version = "0.2.56"
+version = "0.2.57"
 authors = ["The Rust Project Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"

src/unix/notbsd/linux/other/mod.rs

@@ -351,7 +351,6 @@ pub const RLIMIT_MSGQUEUE: ::__rlimit_resource_t = 12;
 pub const RLIMIT_NICE: ::__rlimit_resource_t = 13;
 pub const RLIMIT_RTPRIO: ::__rlimit_resource_t = 14;
 
-
 pub const MADV_SOFT_OFFLINE: ::c_int = 101;
 pub const MS_RMT_MASK: ::c_ulong = 0x02800051;
 

src/unix/notbsd/mod.rs

@@ -457,7 +457,6 @@ pub const CLOCK_BOOTTIME_ALARM: ::clockid_t = 9;
 // pub const CLOCK_TAI: ::clockid_t = 11;
 pub const TIMER_ABSTIME: ::c_int = 1;
 
-
 pub const RUSAGE_SELF: ::c_int = 0;
 
 pub const O_RDONLY: ::c_int = 0;