Add missing ref image for clip-unbounded

This commit copies clip-unbounded.base.rgb24.ref.png to
clip-unbounded.rgb24.ref.png. This makes the test pass for rgb24
targets.

This failure goes back to commits 6647511 / 049060 which changed the
image comparison in the test suite. Previously, transparent "nothing"
and black compared equal, but said commits fixed that. Thus, having a
special reference image with black instead of transparency is the right
fix.

Signed-off-by: Uli Schlachter <psychon@znc.in>

.gitlab-ci/ignore-image-rgb24.txt

@@ -10,7 +10,6 @@ bug-source-cu
 clip-device-offset
 clip-fill-rule-pixel-aligned
 clip-text
-clip-unbounded
 culled-glyphs
 dash-zero-length
 degenerate-path

.gitlab-ci/ignore-image16-rgb24.txt

@@ -41,7 +41,6 @@ clip-stroke
 clip-stroke-unbounded
 clip-text
 clip-twice
-clip-unbounded
 close-path-current-point
 copy-path
 coverage-abutting

.gitlab-ci/ignore-quartz-rgb24.txt

@@ -11,7 +11,6 @@ bug-image-compositor
 bug-source-cu
 clip-device-offset
 clip-fill-rule-pixel-aligned
-clip-unbounded
 coverage-rhombus
 culled-glyphs
 device-offset

.gitlab-ci/ignore-recording-rgb24.txt

@@ -11,7 +11,6 @@ clear-source
 clip-device-offset
 clip-fill-rule-pixel-aligned
 clip-text
-clip-unbounded
 coverage-rectangles
 culled-glyphs
 dash-zero-length

.gitlab-ci/ignore-svg11-rgb24.txt

@@ -13,7 +13,6 @@ clip-fill-rule-pixel-aligned
 clip-operator
 clip-stroke-unbounded
 clip-text
-clip-unbounded
 culled-glyphs
 dash-zero-length
 degenerate-path

.gitlab-ci/ignore-xcb-fallback-rgb24.txt

@@ -9,7 +9,6 @@ bug-431
 clip-device-offset
 clip-fill-rule-pixel-aligned
 clip-text
-clip-unbounded
 coverage-intersecting-triangles
 culled-glyphs
 dash-zero-length

.gitlab-ci/ignore-xcb-render-0-0-rgb24.txt

@@ -16,7 +16,6 @@ clip-operator
 clip-polygons
 clip-shape
 clip-stroke-unbounded
-clip-unbounded
 coverage-intersecting-triangles
 culled-glyphs
 dash-zero-length

.gitlab-ci/ignore-xcb-rgb24.txt

@@ -10,7 +10,6 @@ bug-spline
 clip-device-offset
 clip-fill-rule-pixel-aligned
 clip-operator
-clip-unbounded
 coverage-column-triangles
 coverage-intersecting-quads
 coverage-intersecting-triangles

.gitlab-ci/ignore-xcb-window&-rgb24.txt

@@ -9,7 +9,6 @@ bug-spline
 clip-device-offset
 clip-fill-rule-pixel-aligned
 clip-operator
-clip-unbounded
 coverage-column-triangles
 coverage-intersecting-quads
 coverage-intersecting-triangles

.gitlab-ci/ignore-xcb-window-rgb24.txt

@@ -9,7 +9,6 @@ bug-spline
 clip-device-offset
 clip-fill-rule-pixel-aligned
 clip-operator
-clip-unbounded
 coverage-column-triangles
 coverage-intersecting-quads
 coverage-intersecting-triangles

.gitlab-ci/ignore-xlib-fallback-rgb24.txt

@@ -10,7 +10,6 @@ bug-seams
 clip-device-offset
 clip-fill-rule-pixel-aligned
 clip-text
-clip-unbounded
 culled-glyphs
 dash-zero-length
 degenerate-path

.gitlab-ci/ignore-xlib-render-0-0-rgb24.txt

@@ -12,7 +12,6 @@ clip-fill-rule-pixel-aligned
 clip-operator
 clipped-group
 clip-text
-clip-unbounded
 coverage-intersecting-triangles
 culled-glyphs
 curve-to-as-line-to

.gitlab-ci/ignore-xlib-rgb24.txt

@@ -19,7 +19,6 @@ clip-shape
 clip-stroke
 clip-stroke-unbounded
 clip-text
-clip-unbounded
 close-path-current-point
 coverage-column-triangles
 coverage-rhombus

.gitlab-ci/ignore-xlib-window-rgb24.txt

@@ -17,7 +17,6 @@ clip-shape
 clip-stroke
 clip-stroke-unbounded
 clip-text
-clip-unbounded
 close-path-current-point
 coverage-column-triangles
 coverage-intersecting-quads