Merge branch 'master' of https://github.com/dotnetcore/FreeSql

Author: 2881099

Providers/FreeSql.Provider.MySql/MySqlDbFirst.cs

@@ -367,14 +367,14 @@ from information_schema.statistics a
                 if (!indexColumns.TryGetValue(table_id, out loc10))
                     indexColumns.Add(table_id, loc10 = new Dictionary<string, DbIndexInfo>(StringComparer.CurrentCultureIgnoreCase));
                 if (!loc10.TryGetValue(index_id, out loc11))
-                    loc10.Add(index_id, loc11 = new DbIndexInfo());
+                    loc10.Add(index_id, loc11 = new DbIndexInfo { Name = index_id });
                 loc11.Columns.Add(new DbIndexColumnInfo { Column = loc9, IsDesc = is_desc });
                 if (is_unique && !is_primary_key)
                 {
                     if (!uniqueColumns.TryGetValue(table_id, out loc10))
                         uniqueColumns.Add(table_id, loc10 = new Dictionary<string, DbIndexInfo>(StringComparer.CurrentCultureIgnoreCase));
                     if (!loc10.TryGetValue(index_id, out loc11))
-                        loc10.Add(index_id, loc11 = new DbIndexInfo());
+                        loc10.Add(index_id, loc11 = new DbIndexInfo { Name = index_id });
                     loc11.Columns.Add(new DbIndexColumnInfo { Column = loc9, IsDesc = is_desc });
                 }
             }