tdf#114820 Fix reading external reference for VLOOKUP and HLOOKUP

Change-Id: Iaa1307123d97a740bdaf90647e8adff224211851
Reviewed-on: https://gerrit.libreoffice.org/49263Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Eike Rathke <erack@redhat.com>
(cherry picked from commit 5c3d0a70)
Reviewed-on: https://gerrit.libreoffice.org/49316

sc/source/core/tool/interpr1.cxx

@@ -6634,7 +6634,9 @@ bool ScInterpreter::FillEntry(ScQueryEntry& rEntry)
             }
         }
         break;
-        case svMatrix :
+        case svExternalDoubleRef:
+        case svExternalSingleRef:
+        case svMatrix:
         {
             svl::SharedString aStr;
             const ScMatValType nType = GetDoubleOrStringFromMatrix(rItem.mfVal, aStr);
@@ -6651,6 +6653,7 @@ bool ScInterpreter::FillEntry(ScQueryEntry& rEntry)
     } // switch ( GetStackType() )
     return true;
 }
+
 void ScInterpreter::ScVLookup()
 {
     CalculateLookup(false);