Results: Fix tests.

src/Model/Results/River/River.py

@@ -156,7 +156,9 @@ class Profile(SQLSubModel):
             elif key in ["sl"]:
                 sf = ">" + ''.join(itertools.repeat("f", len_data))
                 values = struct.unpack(sf, data)
-                values = cls._db_load_data_sl_format(values, len_data, timestamps)
+                values = cls._db_load_data_sl_format(
+                    values, len_data, timestamps
+                )
 
             for timestamp, value in zip(timestamps, values):
                 new_data.set(timestamp, key, value)

src/Model/River.py

@@ -618,7 +618,7 @@ class River(Graph):
         objs.append(self._D90AdisTS)
         objs.append(self._DIFAdisTS)
 
-        if self._results is not None:
+        if self.results is not None:
             objs.append(self.results)
 
         self._save_submodel(execute, objs, data)