Line 531 of db.cpp:
CAddress addr(psz, NODE_NETWORK);

BUT the relevant constructors of CAddress (those starting with a char*) are:

explicit CAddress(const char* pszIn, int portIn, bool fNameLookup = false, uint64 nServicesIn=NODE_NETWORK)
explicit CAddress(const char* pszIn, bool fNameLookup = false, uint64 nServicesIn=NODE_NETWORK)

so the first constructor is called and portIn = NODE_NETWORK. Probably there isn't any difference (the port isn't really necessary, all that is done in db.cpp is checking if the address is valid), but the code should be:

CAddress addr(psz, false, NODE_NETWORK);

or more simply

CAddress addr(psz);