fix unsafety of new ldso dep tracking in presence of malloc replacement

fix unsafety of new ldso dep tracking in presence of malloc replacement

commit 403555690775f7c8806372644f543518e6664e3b introduced runtime
realloc of an array that may have been allocated before symbols were
resolved outside of libc, which is invalid if the allocator has been
replaced. track this condition and manually copy if needed.