fix: fix compile on windows (#61)

rust-toolchain.toml

@@ -1,4 +1,4 @@
 # this should match the nightly version in tari-project/tari
 # only used for cargo fmt settings, repo should always compile on stable too
 [toolchain]
-channel = "nightly-2022-11-03"
+channel = "stable"

src/lib.rs

@@ -258,7 +258,10 @@ impl RandomXDataset {
             0 => Err(RandomXError::Other("Dataset item count was 0".to_string())),
             x => {
                 // This weirdness brought to you by c_ulong being different on Windows and Linux
-                Ok(u32::try_from(x)?)
+                #[cfg(target_os = "windows")]
+                return Ok(x);
+                #[cfg(target_os = "linux")]
+                return Ok(u32::try_from(x)?);
             },
         }
     }