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3fc1b407d2
The result of multiplying a uint16_t by another uint16_t will be a
signed int. Comparing this against a size_t will perform an unwanted
sign extension.
Fix by explicitly casting e_phnum to an unsigned int, thereby matching
the data type used for the loop index variable (and avoiding the
unwanted sign extension).
This mirrors wimboot commit 15f6162 ("[efi] Fix Coverity warning about
unintended sign extension").
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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