Fix whitespace

Author: ratmice

lrpar/src/lib/ctbuilder.rs

@@ -930,7 +930,7 @@ where
             visibility,
             rust_edition,
             #[cfg(test)]
-                inspect_callback: _,
+            inspect_callback: _,
             phantom: _,
         } = self;
         let build_time = env!("VERGEN_BUILD_TIMESTAMP");