override rust-bindgen provenance (eg please cargo)

Index: comm/rust/.cargo/config.toml.in
--- comm/rust/.cargo/config.toml.in.orig
+++ comm/rust/.cargo/config.toml.in
@@ -126,6 +126,10 @@ git = "https://github.com/thunderbird/xml-struct-rs.gi
 rev = "87723b90425d474fd29095d8b710baefd7c9b13a"
 replace-with = "vendored-sources"
 
+[source."git+https://github.com/rust-lang/rust-bindgen?rev=9366e0af8da529c958b4cd4fcbe492d951c86f5c"]
+git = "https://github.com/rust-lang/rust-bindgen"
+rev = "9366e0af8da529c958b4cd4fcbe492d951c86f5c"
+replace-with = "vendored-sources"
 
 # Take advantage of the fact that cargo will treat lines starting with #
 # as comments to add preprocessing directives. This file can thus by copied
