Fix small_rng feature

Author: vks

src/prelude.rs

@@ -21,7 +21,7 @@
 #[doc(no_inline)] pub use crate::distributions::Distribution;
 #[doc(no_inline)] pub use crate::rngs::StdRng;
 #[cfg(feature="small_rng")]
-#[doc(no_inline)] pub use rngs::SmallRng;
+#[doc(no_inline)] pub use crate::rngs::SmallRng;
 #[doc(no_inline)] #[cfg(feature="std")] pub use crate::rngs::ThreadRng;
 #[doc(no_inline)] pub use crate::{Rng, RngCore, CryptoRng, SeedableRng};
 #[doc(no_inline)] #[cfg(feature="std")] pub use crate::{random, thread_rng};

src/rngs/small.rs

@@ -8,12 +8,12 @@
 
 //! A small fast RNG
 
-use {RngCore, SeedableRng, Error};
+use rand_core::{RngCore, SeedableRng, Error};
 
 #[cfg(all(not(target_os = "emscripten"), target_pointer_width = "64"))]
-type Rng = ::rand_pcg::Pcg64Mcg;
+type Rng = rand_pcg::Pcg64Mcg;
 #[cfg(not(all(not(target_os = "emscripten"), target_pointer_width = "64")))]
-type Rng = ::rand_pcg::Pcg32;
+type Rng = rand_pcg::Pcg32;
 
 /// A small-state, fast non-crypto PRNG
 ///