Fix minor bug

Test suite: None
Test baseline: N/A
Test namelist changes: N/A
Test status: N/A

Fixes: None

User interface changes?: No

Code review: None

utils/python/CIME/SystemTests/nck.py

@@ -32,19 +32,19 @@ def _common_setup(self):
         # think that the halving was unnecessary; but it's needed in case the
         # original NTASKS was odd. (e.g., for NTASKS originally 15, we want to
         # use NTASKS = int(15/2) * 2 = 14 tasks for case two.)
-        for comp in _COMPONENT_LIST:
+        for comp in self._COMPONENT_LIST:
             ntasks = self._case.get_value("NTASKS_%s"%comp)
             if ( ntasks > 1 ):
                 self._case.set_value("NTASKS_%s"%comp, int(ntasks/2))
 
     def _case_one_setup(self):
-        for comp in _COMPONENT_LIST:
+        for comp in self._COMPONENT_LIST:
             self._case.set_value("NINST_%s"%comp, 1)
 
         case_setup(self._case, test_mode=True, reset=True)
 
     def _case_two_setup(self):
-        for comp in _COMPONENT_LIST:
+        for comp in self._COMPONENT_LIST:
             self._case.set_value("NINST_%s"%comp, 2)
             ntasks = self._case.get_value("NTASKS_%s"%comp)
             self._case.set_value("NTASKS_%s"%comp, ntasks*2)