Fix bindgen deprecation

Author: messense

Cargo.toml

@@ -2,7 +2,7 @@
 name = "mupdf"
 version = "0.4.2"
 authors = ["messense <messense@icloud.com>"]
-edition = "2018"
+edition = "2021"
 description = "Safe Rust wrapper to MuPDF"
 keywords = ["pdf", "mupdf"]
 license = "AGPL-3.0"

mupdf-sys/build.rs

@@ -385,7 +385,7 @@ fn main() {
         .allowlist_var("pdf_.*")
         .allowlist_var("PDF_.*")
         .allowlist_var("UCDN_.*")
-        .parse_callbacks(Box::new(bindgen::CargoCallbacks))
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
         .size_t_is_usize(true)
         .generate()
         .expect("Unable to generate bindings");