terraform: don't add tainted resources to expanded graph [GH-412]

The tainted resources are separate elements in the graph.

CHANGELOG.md

@@ -10,6 +10,7 @@ BUG FIXES:
   * core: If a resource fails to create and has provisioners, it is
       marked as tainted. [GH-434]
   * core: Set types are validated to be sets. [GH-413]
+  * core: Fix crash case when destroying with tainted resources. [GH-412]
   * providers/aws: Refresh of launch configs and autoscale groups load
       the correct data and don't incorrectly recreate themselves. [GH-425]
   * providers/aws: Fix case where ELB would incorrectly plan to modify

terraform/graph.go

@@ -1667,11 +1667,6 @@ func (n *GraphNodeResource) Expand() (*depgraph.Graph, error) {
 		return n.finalizeGraph(g, false)
 	}
 
-	if n.State != nil {
-		// Add the tainted resources
-		graphAddTainted(g, n.State)
-	}
-
 	return n.finalizeGraph(g, true)
 }