Fix FFI build

Author: dekomissMSFT

bindings/ffi/src/lib.rs

@@ -462,7 +462,7 @@ pub extern "C" fn regorus_engine_get_ast_as_json(engine: *mut RegorusEngine) ->
 /// See https://docs.rs/regorus/latest/regorus/coverage/struct.Engine.html#method.get_policy_package_names
 #[no_mangle]
 pub extern "C" fn regorus_engine_get_policy_package_names(engine: *mut RegorusEngine) -> RegorusResult {
-    let output = || -> Result<String> { serde_json::to_string_pretty(&to_ref(&engine)?.engine.get_policy_package_names()?).map_err(anyhow::Error::msg) }();
+    let output = || -> Result<String> { serde_json::to_string_pretty(&to_ref(engine)?.engine.get_policy_package_names()?).map_err(anyhow::Error::msg) }();
     match output {
         Ok(out) => RegorusResult {
             status: RegorusStatus::RegorusStatusOk,
@@ -478,7 +478,7 @@ pub extern "C" fn regorus_engine_get_policy_package_names(engine: *mut RegorusEn
 /// See https://docs.rs/regorus/latest/regorus/coverage/struct.Engine.html#method.get_policy_parameters
 #[no_mangle]
 pub extern "C" fn regorus_engine_get_policy_parameters(engine: *mut RegorusEngine) -> RegorusResult {
-    let output = || -> Result<String> { serde_json::to_string_pretty(&to_ref(&engine)?.engine.get_policy_parameters()?).map_err(anyhow::Error::msg) }();
+    let output = || -> Result<String> { serde_json::to_string_pretty(&to_ref(engine)?.engine.get_policy_parameters()?).map_err(anyhow::Error::msg) }();
     match output {
         Ok(out) => RegorusResult {
             status: RegorusStatus::RegorusStatusOk,