Face-Create from Edges needs a failure statement

The Face - Create from Edges operator in polygon session results in "operation succeeded" even when no faces were created.

Recipe:

1. Create a new polygon model
2. Create an edge interactively, but don't close the contour
3. Create an edge from vertices and connect the two edge ends (you should now have two edges and a closed polygon)
4. Open Face - Create from Edges
5. Only select ONE of the edges
6. Click Apply
7. No faces are created, but the log displays that the operation succeeded.