[librsvg: 71/90] Don't rebind "affine", since we need the original value

[Federico Mena Quintero <federico src gnome org>]

commit d2e4faf4025631ca2e1c6d5a74e106e5c6ce232f
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Mar 21 18:28:16 2019 -0600

    Don't rebind "affine", since we need the original value
    
    Fixes filters-blend-01-b.svg
    
    762 pass, 4 fail

 rsvg_internals/src/drawing_ctx.rs | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
index e5a99cc2..2031ef67 100644
--- a/rsvg_internals/src/drawing_ctx.rs
+++ b/rsvg_internals/src/drawing_ctx.rs
@@ -449,7 +449,7 @@ impl DrawingCtx {
                 let UnitInterval(opacity) = values.opacity.0;
                 let enable_background = values.enable_background;
 
-                let affine = dc.cr.get_matrix();
+                let affine_at_start = dc.cr.get_matrix();
 
                 let (clip_in_user_space, clip_in_object_space) =
                     dc.get_clip_in_user_and_object_space(clip_uri);
@@ -466,10 +466,10 @@ impl DrawingCtx {
                     let stack_was_empty = dc.cr_stack.len() == 0;
 
                     let affine = if stack_was_empty {
-                        affine
+                        affine_at_start
                     } else {
                         let initial_inverse = dc.initial_affine_with_offset().try_invert().unwrap();
-                        cairo::Matrix::multiply(&affine, &initial_inverse)
+                        cairo::Matrix::multiply(&affine_at_start, &initial_inverse)
                     };
 
                     let cr = if filter.is_some() {
@@ -485,7 +485,7 @@ impl DrawingCtx {
                         let untransformed = cairo::Matrix::multiply(&affine, &initial_inverse);
                         untransformed
                     } else {
-                        cr.get_matrix()
+                        affine_at_start
                     };
 
                     cr.set_matrix(temporary_affine);
@@ -553,7 +553,7 @@ impl DrawingCtx {
                         }
                     }
 
-                    dc.cr.set_matrix(affine);
+                    dc.cr.set_matrix(affine_at_start);
 
                     let bbox = dc.bbox;
                     dc.bbox = prev_bbox;