[lld] r280941 - Use a protected destructor instead of a virtual one.

[George Rimar via llvm-commits]

>class LinkerScriptBase {
>+protected:
>+  ~LinkerScriptBase() = default;
>+
> public:
>-  virtual ~LinkerScriptBase() = default;
>   virtual uint64_t getOutputSectionAddress(StringRef Name) = 0;
>   virtual uint64_t getOutputSectionSize(StringRef Name) = 0;
>   virtual uint64_t getOutputSectionAlign(StringRef Name) = 0;

Nice solution, thanks !

George.