Fix Actix bindgen issue

Addresses #5107

frameworks/Rust/actix/Cargo.toml

@@ -53,6 +53,7 @@ tokio-postgres = { git="https://github.com/fafhrd91/rust-postgres.git" }
 
 [build-dependencies]
 askama = "0.8"
+bindgen = "0.42"
 
 [profile.release]
 lto = true
@@ -60,4 +61,4 @@ opt-level = 3
 codegen-units = 1
 
 [patch.crates-io]
-tokio-reactor = { git="https://github.com/fafhrd91/tokio.git" }
+tokio-reactor = { git="https://github.com/fafhrd91/tokio.git" }