Sort values returned from KVStore::list

This will be mandatory on the upstreamed trait anyways and is useful to
make it easiert to compare returned values.

Author: tnull

src/io/fs_store.rs

@@ -222,6 +222,8 @@ impl KVStore for FilesystemStore {
 			}
 		}
 
+		keys.sort();
+
 		Ok(keys)
 	}
 }

src/io/sqlite_store.rs

@@ -160,6 +160,7 @@ impl KVStore for SqliteStore {
 			})?);
 		}
 
+		keys.sort();
 		Ok(keys)
 	}
 }