Merge pull request #1084 from xylar/fix-conservation-main-vs-ctrl

Fix conservation when list of inputs is empty

Author: xylar

mpas_analysis/ocean/conservation.py

@@ -743,6 +743,10 @@ def _compute_time_series_with_xarray(self, variable_list):
 
         append, inputFiles = self._check_output_safe_to_append(variable_list)
 
+        if len(inputFiles) == 0:
+            # nothing to do
+            return
+
         # Open all input files as a single dataset
         self.logger.info(
             f'Opening input files with xarray: {inputFiles[0]} ... '