Add/check function return

ChangeLog

sflphone.spec.in

src/call.cpp

src/call.h

src/gui/guiframework.cpp

src/gui/guiframework.h

src/gui/qt/qtGUImainwindow.cpp

src/gui/qt/qtGUImainwindow.h

src/manager.cpp

src/manager.h

src/sipvoiplink.cpp