fix MCSectionELF to not leak memory, just like I did for MCSymbol.

MCSectionMachO is already fine (yay for fixed size arrays?),
MCSectionCOFF still leaks.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98537 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/MC/MCSection.h

@@ -42,6 +42,8 @@ namespace llvm {
   };
 
   class MCSectionCOFF : public MCSection {
+    // FIXME: This memory is leaked because MCSectionCOFF is bump pointer
+    // allocated and this never gets freed.
     std::string Name;
     
     /// IsDirective - This is true if the section name is a directive, not