[Polly] Clang complains about missing virtual destructor

[gchatelet]

Summary

Feel free to reassign if needed.

[gchatelet]

A gentle ping. It's a one liner and should be reviewed easily :)

[jdoerfert]

LGTM

polly/trunk/include/polly/CodeGen/LoopGenerators.h

public:
   /// Create a parallel loop generator for the current function.
   ParallelLoopGenerator(PollyIRBuilder &Builder, LoopInfo &LI,
                         DominatorTree &DT, const DataLayout &DL)
       : Builder(Builder), LI(LI), DT(DT),
         LongType(
             Type::getIntNTy(Builder.getContext(), DL.getPointerSizeInBits())),
         M(Builder.GetInsertBlock()->getParent()->getParent()) {}
 
+  virtual ~ParallelLoopGenerator() {}
+
   /// Create a parallel loop.
   ///
   /// This function is the main function to automatically generate a parallel
   /// loop with all its components.
   ///
   /// @param LB        The lower bound for the loop we parallelize.
   /// @param UB        The upper bound for the loop we parallelize.
   /// @param Stride    The stride of the loop we parallelize.