libdwfl: Always try find_dynsym last, also on find_symtab ELF errors.

An ELF error during find_symtab might be incomplete shdrs or string table
from ELF images read through elf_from_memory. The phdrs and dynsym should
always be complete.

Signed-off-by: Mark Wielaard <mjw@redhat.com>
2 files changed