HTTP Digest auth header parse error

Hi.

curl-7.17.1
I have server that required digest authentication. They have sending such header:
www-authenticate: digest realm="eee" , algorithm="MD5" , opaque="1234" , qop="auth" , nonce="6484"

Function Curl_input_digest doesn't handle correctly such header (problem is: after quote following space). Unfortunately I can't change server code.

I have attached patch for Curl_input_digest function, to solve this problem.