[libc] fix -Wshorten-64-to-32 for 32b arm mmap #77395
Description
#77350 was an attempted fix that didn't work. Filing a TODO to track a quick workaround to get the build bot green, until we can fix this properly.
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#77350 was an attempted fix that didn't work. Filing a TODO to track a quick workaround to get the build bot green, until we can fix this properly.