Update bindgen.

This includes a clang-sys upgrade that removes crashes in linux32, and nothing else.
servo · bors-servo · Oct 12, 2017 · Oct 12, 2017 · Oct 12, 2017 · 8c3e742cbfdd3eff37d94bf62b7331bb0803d439
commit 8c3e742cbfdd3eff37d94bf62b7331bb0803d439
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/components/style/Cargo.toml b/components/style/Cargo.toml
@@ -83,7 +83,7 @@ kernel32-sys = "0.2"
 [build-dependencies]
 lazy_static = "0.2"
 log = "0.3"
-bindgen = { version = "0.29", optional = true }
+bindgen = { version = "0.29.1", optional = true }
 regex = {version = "0.2", optional = true}
 walkdir = "1.0"
 toml = {version = "0.2.1", optional = true, default-features = false}