[stable29] fix(previews): Don't crash on animated WEBP images #47080
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Fixes #30029 and #37263 libgd handles animated WEBP images poorly and generates a meaningless error message as a result. We were returning a 500 error for these preview requests (web) and a fatal error at the command-line (occ). Now we bypass libgd if the we detect an animated WEBP image (and simply don't generate the preview). No more 500 error. Should fix occ too. Signed-off-by: Josh Richards <josh.t.richards@gmail.com> Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>
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AndyScherzinger
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st3iny
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Backport of PR #38364