Only set call site if not empty

In an earlier discussion, I noted that most compunit_symtabs do not
have a call-site hash table, so inlining the object into
compunit_symtab did not make sense.

It turns out that this is not entirely true -- while most
compunit_symtabs do not have any data in this object, the object
itself is always created.  This in turn is a regression introduced by
commit de2b4ab5 ("Convert dwarf2_cu::call_site_htab to new hash
table").

This patch fixes the issue by arranging to only store a call-site hash
table when it is non-empty.

Approved-By: Simon Marchi <simon.marchi@efficios.com>

0 files changed, 0 insertions, 0 deletions