[librsvg: 5/5] Merge branch 'nonexistent-filter' into 'master'

[Federico Mena Quintero <federico src gnome org>]

commit 66a41afc7c0148577da91378762918ab21d6d01a
Merge: ee7d90e1f d05fc806d
Author: Federico Mena Quintero <federico mena gmail com>
Date:   Thu Aug 20 03:00:09 2020 +0000

    Merge branch 'nonexistent-filter' into 'master'
    
    Nonexistent filter
    
    Closes #560
    
    See merge request GNOME/librsvg!351

 librsvg_crate/tests/bugs.rs                        |  44 ++++++++++
 librsvg_crate/tests/utils/compare_surfaces.rs      |   4 +-
 rsvg_internals/src/drawing_ctx.rs                  |  10 +--
 tests/fixtures/reftests/nonexisting-filter-ref.png | Bin 89 -> 0 bytes
 tests/fixtures/reftests/nonexisting-filter.svg     |   3 -
 .../reftests/svg1.1/filters-felem-01-b-ref.png     | Bin 11062 -> 0 bytes
 .../reftests/svg1.1/filters-felem-01-b.svg         |  90 ---------------------
 7 files changed, 50 insertions(+), 101 deletions(-)
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