- remove edge collapse loop operator (now replaced by dissolve).

- fix missing null pointer check from own recent changes.
- add asserts if BLI path functions are given wrong id's

source/blender/blenlib/intern/path_util.c

@@ -1222,6 +1222,9 @@ const char *BLI_get_folder(int folder_id, const char *subfolder)
 			if (get_path_local(path, "python", subfolder, ver)) break;
 			if (get_path_system(path, "python", subfolder, "BLENDER_SYSTEM_PYTHON", ver)) break;
 			return NULL;
+
+		default:
+			BLI_assert(0);
 	}
 	
 	return path;
@@ -1248,6 +1251,8 @@ const char *BLI_get_user_folder_notest(int folder_id, const char *subfolder)
 		case BLENDER_USER_SCRIPTS:
 			get_path_user(path, "scripts", subfolder, "BLENDER_USER_SCRIPTS", ver);
 			break;
+		default:
+			BLI_assert(0);
 	}
 	if ('\0' == path[0]) {
 		return NULL;

source/blender/editors/mesh/editmesh_select.c

@@ -2392,6 +2392,7 @@ static void deselect_nth_active(BMEditMesh *em, BMVert **r_eve, BMEdge **r_eed,
 	EDBM_selectmode_flush(em);
 	ele = BM_mesh_active_elem_get(em->bm);
 
+	if (ele) {
 		switch (ele->head.htype) {
 			case BM_VERT:
 				*r_eve = (BMVert *)ele;
@@ -2403,6 +2404,7 @@ static void deselect_nth_active(BMEditMesh *em, BMVert **r_eve, BMEdge **r_eed,
 				*r_efa = (BMFace *)ele;
 				return;
 		}
+	}
 
 	if (em->selectmode & SCE_SELECT_VERTEX) {
 		BM_ITER_MESH (v, &iter, em->bm, BM_VERTS_OF_MESH) {

source/blender/editors/mesh/editmesh_tools.c

@@ -407,34 +407,6 @@ void MESH_OT_edge_collapse(wmOperatorType *ot)
 	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
 }
 
-static int edbm_collapse_edge_loop_exec(bContext *C, wmOperator *op)
-{
-	Object *obedit = CTX_data_edit_object(C);
-	BMEditMesh *em = BKE_editmesh_from_object(obedit);
-
-	if (!EDBM_op_callf(em, op, "dissolve_edge_loop edges=%he", BM_ELEM_SELECT))
-		return OPERATOR_CANCELLED;
-
-	EDBM_update_generic(em, true, true);
-
-	return OPERATOR_FINISHED;
-}
-
-void MESH_OT_edge_collapse_loop(wmOperatorType *ot)
-{
-	/* identifiers */
-	ot->name = "Edge Collapse Loop";
-	ot->description = "Collapse selected edge loops";
-	ot->idname = "MESH_OT_edge_collapse_loop";
-
-	/* api callbacks */
-	ot->exec = edbm_collapse_edge_loop_exec;
-	ot->poll = ED_operator_editmesh;
-
-	/* flags */
-	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
-}
-
 static int edbm_add_edge_face__smooth_get(BMesh *bm)
 {
 	BMEdge *e;

source/blender/editors/mesh/mesh_intern.h

@@ -180,7 +180,6 @@ void MESH_OT_colors_rotate(struct wmOperatorType *ot);
 void MESH_OT_colors_reverse(struct wmOperatorType *ot);
 void MESH_OT_delete(struct wmOperatorType *ot);
 void MESH_OT_edge_collapse(struct wmOperatorType *ot);
-void MESH_OT_edge_collapse_loop(struct wmOperatorType *ot);
 void MESH_OT_faces_shade_smooth(struct wmOperatorType *ot);
 void MESH_OT_faces_shade_flat(struct wmOperatorType *ot);
 void MESH_OT_split(struct wmOperatorType *ot);

source/blender/editors/mesh/mesh_ops.c

@@ -119,7 +119,6 @@ void ED_operatortypes_mesh(void)
 
 	WM_operatortype_append(MESH_OT_delete);
 	WM_operatortype_append(MESH_OT_edge_collapse);
-	WM_operatortype_append(MESH_OT_edge_collapse_loop);
 
 	WM_operatortype_append(MESH_OT_separate);
 	WM_operatortype_append(MESH_OT_dupli_extrude_cursor);