[librsvg/rustification] rsvg-path: Make RsvgPathBuilder an opaque struct

[Federico Mena Quintero <federico src gnome org>]

commit 2d21ba64de61d281f51f2c12dcd3e09db280d4bc
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Oct 31 20:57:20 2016 -0600

    rsvg-path: Make RsvgPathBuilder an opaque struct

 rsvg-path.c |    5 +++++
 rsvg-path.h |    7 ++-----
 2 files changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/rsvg-path.c b/rsvg-path.c
index 016c899..bba6d0b 100644
--- a/rsvg-path.c
+++ b/rsvg-path.c
@@ -44,6 +44,11 @@
    Reference: https://www.w3.org/TR/SVG/paths.html#PathDataBNF
 */
 
+struct _RsvgPathBuilder {
+    GArray *path_data;
+    int     last_move_to_index;
+};
+
 typedef struct _RSVGParsePathCtx RSVGParsePathCtx;
 
 struct _RSVGParsePathCtx {
diff --git a/rsvg-path.h b/rsvg-path.h
index a64f973..1dfff58 100644
--- a/rsvg-path.h
+++ b/rsvg-path.h
@@ -32,12 +32,9 @@
 #include <glib.h>
 #include <cairo.h>
 
-G_BEGIN_DECLS 
+G_BEGIN_DECLS
 
-typedef struct {
-    GArray *path_data;
-    int     last_move_to_index;
-} RsvgPathBuilder;
+typedef struct _RsvgPathBuilder RsvgPathBuilder;
 
 G_GNUC_INTERNAL
 RsvgPathBuilder *rsvg_path_builder_new (void);