Library: LittleKernelLib: LittleKernelMem: fix coherence check
Library: LittleKernelLib: LittleKernelMem: fix coherence check

don't even try to fetch the next item if the next one is the list head.
CR checks the signature and the list head doesn't have a signature.

efidroid/uefi_edk2packages_LittleKernelPkg,efidroid/uefi_edk2packages_LittleKernelPkg