Tracker: Prevent TextWidget to start editing twice

It was possible to confuse TextWidget to start editing twice (clicking on the widget and during the wait,
pressing F2) and confusing the states of the TextWidget.

src/kits/tracker/TextWidget.cpp

@@ -234,7 +234,6 @@ BTextWidget::CheckExpiration()
 			// at least 'doubleClickSpeed' microseconds ellapsed and no click
 			// was registered since.
 			fLastClickedTime = 0;
-			fParams.poseView->SetTextWidgetToCheck(NULL);
 			StartEdit(fParams.bounds, fParams.poseView, fParams.pose);
 		}
 	} else {
@@ -335,7 +334,8 @@ TextViewFilter(BMessage* message, BHandler**, BMessageFilter* filter)
 void
 BTextWidget::StartEdit(BRect bounds, BPoseView* view, BPose* pose)
 {
-	if (!IsEditable())
+	view->SetTextWidgetToCheck(NULL, this);
+	if (!IsEditable() || IsActive())
 		return;
 
 	BEntry entry(pose->TargetModel()->EntryRef());