Prior to this change Curl_parsenetrc() would return 27 if the strdup() of pwdir failed even though a) the function is declared to return an int and CURLE_OUT_OF_MEMORY is an enum, and b) the description in the header file is the function "returns -1 on failure, 0 if the host is found, 1 is the host isn't found"

The knock on effect is that libcurl would attempt to info "Couldn't find host www.example.com in the .netrc file; using defaults" and continue running rather than erroring with a CURLE_OUT_OF_MEMORY code straight away.

However, the chances that curl or any application developed with libcurl continuing after a memory allocation failure is very low and would presumably return the correct error code on the next allocation failure.