Fix bug where includer never got added

[Oipo]

[Oipo]

Brainfart moment, the signature of the function is const DocInfo_SP& doc()... which returns a reference anyway.

[Oipo]

Nope, was right after all: https://godbolt.org/z/sszYbWYrb

[amiteshsingh-cpi]

Nope, was right after all: https://godbolt.org/z/sszYbWYrb

not required, if the object is of type shared_ptr.

https://godbolt.org/z/jnoPYddEq