uclibc does not have mlock2

Author: skrap

src/unix/linux_like/linux/mod.rs

@@ -3534,6 +3534,7 @@ extern "C" {
     pub fn seekdir(dirp: *mut ::DIR, loc: ::c_long);
 
     pub fn telldir(dirp: *mut ::DIR) -> ::c_long;
+    #[cfg(not(target_env = "uclibc"))]
     pub fn mlock2(addr: *const ::c_void, len: ::size_t, flags: ::c_uint) -> ::c_int;
     pub fn madvise(addr: *mut ::c_void, len: ::size_t, advice: ::c_int) -> ::c_int;