Make sure we have a valid proc_source
Make sure we have a valid proc_source

We assign a value to this variable in an if statement, which means there
might be a chance this value is not initialized, and the compiler warns
about that. Initialize it to NULL, and add an assertion to make sure we
don't pass NULL to plpgsql_scanner_init.

lfittl/libpg_query,lfittl/libpg_query,lfittl/libpg_query