CVE-2026-13732: Fix out-of-bounds write in the STABS parser's
read_member_functions(); the destructor/non-destructor split mis-updated the
linked-list predecessor pointer, so destructors stayed in the list while the
length counter was decremented, causing a negative-index write past the start
of the member-function array when a crafted ELF with .stab/.stabstr sections
was loaded.