users: gcc8: fix stringop-truncation warnings

Avoid errors such as:

| ../git/user_channel/user_mgmt.cpp: In member function 'ipmi_ret_t ipmi::UserAccess::setUserName(const uint8_t&, const char*)':
| ../git/user_channel/user_mgmt.cpp:793:21: error: 'char* strncpy(char*, const char*, size_t)' specified bound 16 equals destination size [-Werror=stringop-truncation]
|          std::strncpy(reinterpret_cast<char*>(userInfo->userName),
|          ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|                       userNameInChar, ipmiMaxUserName);
|                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Change-Id: Ie6ceea49366dc3f3918f31dec3c792276c3a206f
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
1 file changed