NTLM Proxy Authentication with Squid Broken

In setup against Squid with NTLM fakeauth all browser
are working properly.

Qt (is a great tool, thanks!), however, has failed
at the second step of NTLM (second message from proxy server).

The messages are attached.

In more detail as Wireshark decrypts Proxy-Authenticate string
of the second message:

NTLMSSP
NTLMSSP identifier: NTLMSSP
NTLM Message Type: NTLMSSP_CHALLENGE (0x00000002)
Domain: 10
MaxLen: 10
Offset: 48
Flags: 0xa2088207
NTLM Challenge: F08C6FB459CF3CF3
Reserved: 0000000000000000
Address List: Empty

In qauthenticator.cpp, function qNtlmDecodePhase2
there's a check

if (ch.targetName.len + ch.targetName.offset >= (unsigned)data.size())
return false;

data.size is 58.
Since 10 + 48 = 58, this sanity is not passed.

In order to fix it, I've used '>' instead of '>='

Since this fix, it is working properly.