[librsvg: 24/38] get_rust_handle() can now return a &Handle, not a &mut Handle

[Federico Mena Quintero <federico src gnome org>]

commit 1468d89a79ac2d7b8af50bf0f468d34bff261097
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Jan 23 12:44:18 2019 -0600

    get_rust_handle() can now return a &Handle, not a &mut Handle

 rsvg_internals/src/handle.rs       | 6 +++---
 rsvg_internals/src/pixbuf_utils.rs | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/rsvg_internals/src/handle.rs b/rsvg_internals/src/handle.rs
index 51cef0c3..f15e5e97 100644
--- a/rsvg_internals/src/handle.rs
+++ b/rsvg_internals/src/handle.rs
@@ -663,7 +663,7 @@ impl LoadFlags {
 extern "C" {
     fn rsvg_handle_get_type() -> glib_sys::GType;
 
-    fn rsvg_handle_get_rust(handle: *const RsvgHandle) -> *mut Handle;
+    fn rsvg_handle_get_rust(handle: *const RsvgHandle) -> *const Handle;
 }
 
 #[no_mangle]
@@ -677,8 +677,8 @@ pub unsafe extern "C" fn rsvg_handle_rust_free(raw_handle: *mut Handle) {
     Box::from_raw(raw_handle);
 }
 
-pub fn get_rust_handle<'a>(handle: *const RsvgHandle) -> &'a mut Handle {
-    unsafe { &mut *(rsvg_handle_get_rust(handle) as *mut Handle) }
+pub fn get_rust_handle<'a>(handle: *const RsvgHandle) -> &'a Handle {
+    unsafe { &*rsvg_handle_get_rust(handle) }
 }
 
 #[no_mangle]
diff --git a/rsvg_internals/src/pixbuf_utils.rs b/rsvg_internals/src/pixbuf_utils.rs
index bfdd6dbf..1324fa69 100644
--- a/rsvg_internals/src/pixbuf_utils.rs
+++ b/rsvg_internals/src/pixbuf_utils.rs
@@ -134,7 +134,7 @@ fn get_final_size(dimensions: &RsvgDimensionData, size_mode: &SizeMode) -> (i32,
 }
 
 fn render_to_pixbuf_at_size(
-    handle: &mut Handle,
+    handle: &Handle,
     dimensions: &RsvgDimensionData,
     width: i32,
     height: i32,