fix: fallback to 72 dpi when image header is 0 (#1494)#1505
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thiagocborghi changed the title 
thiagocborghiforce-pushed the fix/zero-dpi-fallback branch from 06c03d6 to df7b5bbComparethiagocborghi changed the title 
rshah713 approved these changes Aug 2, 2025
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Adds a 72-dpi fallback when an image header declares 0 dpi, preventing the
ZeroDivisionError reported in #1494.
The fix changes two getter methods (
horz_dpi/vert_dpi) and adds aregression test with a 0-dpi JPEG fixture.