ext/gd/tests/gh10614.phpt: skip if no PNG support

This test uses imagecreatefrompng(), which won't be there if libgd was
built without PNG support.

Closes GH-14905.

Fix GH-10614: imagerotate will turn the picture all black, when rotated 90

This is a backport of the upstream libgd PR that was recently committed
[1].

[1] https://github.com/li

Fix GH-10614: imagerotate will turn the picture all black, when rotated 90

This is a backport of the upstream libgd PR that was recently committed
[1].

[1] https://github.com/libgd/libgd/pull/862

Closes GH-13246.

show more ...