Lint: Use lazy evaluation.

  - https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call

1 files changed, 2 insertions, 2 deletions

diff --git a/ffi-macros/src/lib.rs b/ffi-macros/src/lib.rs
index 0a1efc1d..6eebc9a3 100644
--- a/ffi-macros/src/lib.rs
+++ b/ffi-macros/src/lib.rs
@@ -258,8 +258,8 @@ pub fn ffi_wrapper_type(args: TokenStream, input: TokenStream) -> TokenStream {
     }
 
     let wrapper = st.ident.clone();
-    let name = name.unwrap_or(ident2c(&st.ident));
-    let prefix = prefix.unwrap_or("".into());
+    let name = name.unwrap_or_else(|| ident2c(&st.ident));
+    let prefix = prefix.unwrap_or_else(|| "".into());
 
     // Parse the type of the wrapped object.
     let argument_span = st.fields.span();