HandlerSocket fails to build with debug server flags

[laurynas-biveinis]

If HS is placed to plugin/ directory of the server tree and the server is configured with -DWITH_DEBUG=ON, the build will fail with a sequence of errors, the first one being

06:18:36 cc1plus: warnings being treated as errors
06:18:36 In file included from /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/socket.hpp:15,
06:18:36 from /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/hstcpcli.hpp:19,
06:18:36 from /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/hstcpcli.cpp:12:
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp: In member function ‘int dena::auto_addrinfo::resolve(const char_, const char_, int, int, int, int)’:
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_flags’
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_family’
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_socktype’
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_protocol’
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_addrlen’
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_addr’
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_canonname’
06:18:36 /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/ubuntu-lucid-64bit/plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/auto_addrinfo.hpp:35: error: missing initializer for member ‘addrinfo::ai_next’
06:18:36 make[2]: *** [plugin/HandlerSocket-Plugin-for-MySQL/libhsclient/CMakeFiles/hsclient.dir/hstcpcli.cpp.o] Error 1

This was reported as https://bugs.launchpad.net/percona-server/+bug/1323014. The fix patch is available at https://code.launchpad.net/~laurynas-biveinis/percona-server/bug1323014/+merge/220927