message: Fix non-default location of znc.pem when upgrading configs from pre-1.7.
  New options SSLDHParamFile and SSLKeyFile were pointing at the default
  location instead of the same as SSLCertFile.
  Thanks to for the report.
diff: @@ -381,8 +381,7 @@ void CZNC::InitDirs(const CString& sArgvPath, const CString& sDataDir) {
  m_sZNCPath = sDataDir;
  }
  - m_sSSLCertFile = m_sSSLKeyFile = m_sSSLDHParamFile =
  - m_sZNCPath + "/znc.pem";
  + m_sSSLCertFile = m_sZNCPath + "/znc.pem";
  }
  CString CZNC::GetConfPath(bool bAllowMkDir) const {
  @@ -430,11 +429,13 @@ CString CZNC::GetPemLocation() const {
  }
  CString CZNC::GetKeyLocation() const {
  - return CDir::ChangeDir("", m_sSSLKeyFile);
  + return CDir::ChangeDir(
  + "", m_sSSLKeyFile.empty() ? m_sSSLCertFile : m_sSSLKeyFile);
  }
  CString CZNC::GetDHParamLocation() const {
  - return CDir::ChangeDir("", m_sSSLDHParamFile);
  + return CDir::ChangeDir(
  + "", m_sSSLDHParamFile.empty() ? m_sSSLCertFile : m_sSSLDHParamFile);
  }
  CString CZNC::ExpandConfigPath(const CString& sConfigFile, bool bAllowMkDir) {
  @@ -487,9 +488,9 @@ bool CZNC::WriteConfig() {
  CConfig config;
  config.AddKeyValuePair("AnonIPLimit", CString(m_uiAnonIPLimit));
  config.AddKeyValuePair("MaxBufferSize", CString(m_uiMaxBufferSize));
  - config.AddKeyValuePair("SSLCertFile", CString(m_sSSLCertFile));
  - config.AddKeyValuePair("SSLKeyFile", CString(m_sSSLKeyFile));
  - config.AddKeyValuePair("SSLDHParamFile", CString(m_sSSLDHParamFile));
  + config.AddKeyValuePair("SSLCertFile", CString(GetPemLocation()));
  + config.AddKeyValuePair("SSLKeyFile", CString(GetKeyLocation()));
  + config.AddKeyValuePair("SSLDHParamFile", CString(GetDHParamLocation()));
  config.AddKeyValuePair("ProtectWebSessions",
  CString(m_bProtectWebSessions));
  config.AddKeyValuePair("HideVersion", CString(m_bHideVersion));
  