More cleanup in error cases

May want to allow an environment variable or some such to keep the working .g
for debugging in case of problems, but by default clean up after ourselves.

src/libged/facetize/tri_booleval.cpp

@@ -490,6 +490,7 @@ _ged_facetize_booleval(struct _ged_facetize_state *s, int argc, struct directory
 	    // materially contribute to the final object shape, but for some
 	    // applications like visualization there are cases where "something is
 	    // better than nothing" applies
+	    bu_file_delete(wfile);
 	    return -1;
 	}
     }
@@ -498,11 +499,17 @@ _ged_facetize_booleval(struct _ged_facetize_state *s, int argc, struct directory
     // the tree walk to set up Manifold data.  Using the working copy
     // means we will be getting the correct triangle data for each solid
     struct db_i *wdbip = db_open(wfile, DB_OPEN_READONLY);
-    if (!wdbip)
+    if (!wdbip) {
+	bu_file_delete(wfile);
 	return BRLCAD_ERROR;
-    if (db_dirbuild(wdbip) < 0)
+    }
+    if (db_dirbuild(wdbip) < 0) {
+	bu_file_delete(wfile);
 	return BRLCAD_ERROR;
+    }
     db_update_nref(wdbip, &rt_uniresource);
+
+    // Need wdbp in the next two stages for tolerances
     struct rt_wdb *wwdbp = wdb_dbopen(wdbip, RT_WDB_TYPE_DB_DEFAULT);
 
     /* Second stage is to prepare Manifold versions of the instances of the BoT
@@ -540,19 +547,25 @@ _ged_facetize_booleval(struct _ged_facetize_state *s, int argc, struct directory
 
 	if (i < 0) {
 	    bu_free(av, "av");
+	    db_close(wdbip);
+	    bu_file_delete(wfile);
 	    return -1;
 	}
 	bu_free(av, "av");
     }
 
     // TODO - We don't have a tree - whether that's an error or not depends
     if (!s->facetize_tree) {
+	db_close(wdbip);
+	bu_file_delete(wfile);
 	return 0;
     }
 
     // Third stage is to execute the boolean operations
     union tree *ftree = rt_booltree_evaluate(s->facetize_tree, &RTG.rtg_vlfree, &wwdbp->wdb_tol, &rt_uniresource, &manifold_do_bool, 0, (void *)s);
     if (!ftree) {
+	db_close(wdbip);
+	bu_file_delete(wfile);
 	return -1;
     }