debug: try to capture changes that don't invalidate git cache

At least in those cases where we are sending a divesChanged signal we can
easily check if the cache was properly invalidated. Of course this won't help
in cases where we don't notify the dive list about changes, either.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

commands/command_edit.cpp

@@ -688,7 +688,6 @@ void EditTagsBase::undo()
 #else
 	emit diveListNotifier.divesChanged(QVector<dive *>::fromStdVector(dives), id);
 #endif
-
 	setSelection(selectedDives, current);
 }