fix(proxy): fix the 0.9.x build with `--no-default-features --feature…

…s=security-framework`

The build on OS X was broken in this configuration.

Fixes #819

src/client/proxy.rs

@@ -16,7 +16,7 @@ pub fn tunnel(proxy: (Cow<'static, str>, u16)) -> Proxy<HttpConnector, ::net::Op
 }
 
 #[cfg(feature = "security-framework")]
-pub fn tunnel(proxy: (Cow<'static, str>, u16)) -> Proxy<HttpConnector, ::net::Openssl> {
+pub fn tunnel(proxy: (Cow<'static, str>, u16)) -> Proxy<HttpConnector, ::net::ClientWrapper> {
     Proxy {
         connector: HttpConnector,
         proxy: proxy,

src/net.rs

@@ -8,6 +8,9 @@ use std::mem;
 #[cfg(feature = "openssl")]
 pub use self::openssl::{Openssl, OpensslClient};
 
+#[cfg(feature = "security-framework")]
+pub use self::security_framework::ClientWrapper;
+
 use std::time::Duration;
 
 use typeable::Typeable;