raiseDialog: Actually send the XEvent

Amendment to 25c274a0bddd37dd62a9391a9a9f0972a57b70c

Conflicts:
	src/mirall/owncloudgui.cpp
csync_vio_local on windows: fix overflow when computing the size of file > 4GiB

MAXDWORD is 0xFFFFFFFF, so if we add one, it overflows and is 0.
We need to cast it to 64 bits before