changed CClient type to align with znc-git/1.5

[jarrydpage]

When compiling the module against the latest znc cloned from git (znc/znc@78ea60e) built with gcc-4.8, results in these errors:

$ znc-buildmod fish.cpp
Building "fish.so" for ZNC 1.5... fish.cpp: In member function ‘virtual CModule::EModRet CFishMod::OnUserMsg(CString&, CString&)’:
fish.cpp:332:62: error: invalid initialization of reference of type ‘std::vector<CClient*>&’ from expression of type ‘const std::vector<CClient*>’
vector<CClient*>& vClients = this->m_pNetwork->GetClients();
^
fish.cpp: In member function ‘virtual CModule::EModRet CFishMod::OnUserAction(CString&, CString&)’:
fish.cpp:366:62: error: invalid initialization of reference of type ‘std::vector<CClient*>&’ from expression of type ‘const std::vector<CClient*>’
vector<CClient*>& vClients = this->m_pNetwork->GetClients();
^
fish.cpp: In member function ‘virtual CModule::EModRet CFishMod::OnUserNotice(CString&, CString&)’:
fish.cpp:400:62: error: invalid initialization of reference of type ‘std::vector<CClient*>&’ from expression of type ‘const std::vector<CClient*>’
vector<CClient*>& vClients = this->m_pNetwork->GetClients();
^
[ !! ] Error while building "fish.so"

Simple fix, but it fixes all the above errors.

[DanielOaks]

This fixes building on for ZNC 1.6.0 for me, awesome!

[cosmosified]

This builds and works on 1.6.0
try doing a /msg *fish listkeys

it goes into infiinte recursion/loops for me.