[JimBobSquarePants]

Prerequisites

• I have written a descriptive pull-request title
• I have verified that there are no overlapping pull-requests open
• I have verified that I am following the existing coding patterns and practice as demonstrated in the repository. These follow strict Stylecop rules 👮.
• I have provided test coverage for my change (where applicable)

Description

• Fix EXR raw block and scanline offsets, attribute byte order, and metadata cloning.
• Resize decoded images when one dimension already matches the target size.
• Return memory segments when a later segment allocation fails.

Release tests

• All 613 memory tests passed.
• 99 EXR and resize tests passed. Two EXR encoder tests failed because ImageMagick rejected the ZIP and ZIPS output for rgba_float_zip_fallback.exr.