[PATCH 1/4] tests: add a blank reference png for test development

[Micah Fedke]

This png can be used as a reference image (diff will fail, of course)
for a new test until an appropriate reference image can be generated.
---
 tests/reference/blank.png | Bin 0 -> 624 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 tests/reference/blank.png

diff --git a/tests/reference/blank.png b/tests/reference/blank.png
new file mode 100644
index 0000000000000000000000000000000000000000..7100fbc6c333272d963d2d98eb810ce4f7cec4ec
GIT binary patch
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LS3j3^P6<r_d{>^x

literal 0
HcmV?d00001

-- 
2.11.0