Some template warnings shown as Errors

This is the warning, check the screenshot:

18:43:35: Running steps for project msAnnotate...
18:43:35: Configuration unchanged, skipping qmake step.
18:43:35: Starting: "/usr/bin/make"
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_DECLARATIVE_LIB -DQT_SQL_LIB -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I../msAnnotate -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4/QtSql -I/usr/include/qt4/QtDeclarative -I/usr/include/qt4 -I../msAnnotate/qmlapplicationviewer -I/usr/local/include/qjsonrpc -I/usr/X11R6/include -I. -I../msAnnotate -I. -o Server.o ../msAnnotate/Server.cpp
In file included from /usr/include/qt4/QtCore/QtCore:74:0,
from /usr/include/qt4/QtSql/QtSql:3,
from ../msAnnotate/Server.cpp:9:
/usr/include/qt4/QtCore/qtconcurrentfilter.h: In function 'QtConcurrent::ThreadEngineStarter<void> QtConcurrent::filterInternal(Sequence&, KeepFunctor, ReduceFunctor)':
/usr/include/qt4/QtCore/qtconcurrentfilter.h:108:47: warning: typedef 'Iterator' locally defined but not used [-Wunused-local-typedefs]
typedef typename Sequence::const_iterator Iterator;
^
g++ -Wl,-O1 -o msAnnotate main.o TangibleArea.o TcpClient.o GameServer.o Server.o qmlapplicationviewer.o moc_qmlapplicationviewer.o moc_TangibleArea.o moc_TcpClient.o moc_GameServer.o moc_Server.o -L/usr/lib/i386-linux-gnu -L/usr/X11R6/lib -lEdisTouch -lqjsonrpc -lQtDeclarative -lQtSql -lQtOpenGL -lQtGui -lQtNetwork -lQtCore -lGL -lpthread
Copying application data...
18:43:37: The process "/usr/bin/make" exited normally.
18:43:37: Elapsed time: 00:02.