Fix JavaArraySyntheticFrontEnd for non-reference ValueObject.

[andrewford]

Summary

Fix missing return after checking that m_backend is not a pointer or reference type.

[tberghammer]

Looks good, thanks for fixing it (I seen strange issues caused by this so it will help a lot).

lldb/trunk/source/Plugins/Language/Java/JavaFormatterFunctions.cpp

GetIndexOfChildWithName(const ConstString &name) override
         return ExtractIndexFromString(name.GetCString());
     }
 
 private:
     ValueObjectSP
     GetDereferencedValueObject()
     {
         if (!m_backend.IsPointerOrReferenceType())
-            m_backend.GetSP();
+            return m_backend.GetSP();
 
         Error error;
         return m_backend.Dereference(error);
     }
 };
 
 } // end of anonymous namespace