Fix typo guarding memfd export on android.
@@ -50,7 +50,7 @@ feature! {
#[macro_use]
pub mod ioctl;
-#[cfg(any(target_is = "android", target_os = "linux"))]
+#[cfg(any(target_os = "android", target_os = "linux"))]
feature! {
#![feature = "fs"]
pub mod memfd;
