[librsvg: 1/2] Export rsvg_handle_read_stream_sync

[Jordan Petridis <jpetridis src gnome org>]

commit 769f865aa1fcb893388097e7e84225f5c41b8c61
Author: Jordan Petridis <jordan centricular com>
Date:   Tue Dec 18 11:42:48 2018 +0200

    Export rsvg_handle_read_stream_sync
    
    This is a litter weird, the CI seemed to have failed to build
    due to the function not being exported, but locally it built
    fine regardless of the environment and the rustc version. It
    probably was a caching issue.
    
    In any case, 9cb6c084653c232c63cfc17d4b95335f29a0b1c1 portted
    rsvg_handle_read_stream_sync to Rust but did not export it
    leading to the following linker error in the CI:
    
    warning: function is marked #[no_mangle], but not exported
       --> rsvg_internals/src/handle.rs:646:1
        |
    646 | / pub unsafe extern "C" fn rsvg_handle_rust_read_stream_sync(
    647 | |     handle: *mut RsvgHandle,
    648 | |     stream: *mut gio_sys::GInputStream,
    649 | |     cancellable: *mut gio_sys::GCancellable,
    ...   |
    671 | |     }
    672 | | }
        | |_^
        |
        = note: #[warn(private_no_mangle_fns)] on by default
        = help: try exporting the item with a `pub use` statement
    
        Finished dev [unoptimized + debuginfo] target(s) in 1m 04s
      CCLD     librsvg-2.la
    
    *** Warning: Linking the shared library librsvg-2.la against the
    *** static library /builds/GNOME/librsvg/_build/target/debug/librsvg_internals.a is not portable!
      CCLD     rsvg-convert
    /usr/bin/ld: ./.libs/librsvg-2.so: undefined reference to `rsvg_handle_rust_read_stream_sync'
    collect2: error: ld returned 1 exit status

 rsvg_internals/src/lib.rs | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/rsvg_internals/src/lib.rs b/rsvg_internals/src/lib.rs
index 7e7630ed..4ea471df 100644
--- a/rsvg_internals/src/lib.rs
+++ b/rsvg_internals/src/lib.rs
@@ -57,6 +57,7 @@ pub use handle::{
     rsvg_handle_rust_get_root,
     rsvg_handle_rust_new,
     rsvg_handle_rust_node_is_root,
+    rsvg_handle_rust_read_stream_sync,
     rsvg_handle_rust_set_base_url,
     rsvg_handle_rust_set_dpi_x,
     rsvg_handle_rust_set_dpi_y,