Ensure that the group calculation path won't get called when it's disabled.

Change-Id: I0ea45616558bebf99c63862a0458776c67789bbc

sc/source/core/data/documen9.cxx

@@ -690,11 +690,7 @@ void ScDocument::ApplyAsianEditSettings( ScEditEngineDefaulter& rEngine )
 
 void ScDocument::RebuildFormulaGroups()
 {
-    bool bEnableFormulaGroups;
-
-    bEnableFormulaGroups = ScInterpreter::GetGlobalConfig().mbOpenCLEnabled;
-
-    if ( !bEnableFormulaGroups )
+    if (!ScInterpreter::GetGlobalConfig().mbOpenCLEnabled)
         return;
 
     SCTAB nTab;

sc/source/core/data/formulacell.cxx

@@ -3084,6 +3084,9 @@ public:
 
 bool ScFormulaCell::InterpretFormulaGroup()
 {
+    if (!ScInterpreter::GetGlobalConfig().mbOpenCLEnabled)
+        return false;
+
     // Re-build formulae groups if necessary - ideally this is done at
     // import / insert / delete etc. and is integral to the data structures
     pDocument->RebuildFormulaGroups();