Add a space between * and /* to help simple-minded lexers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53187 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/Allocator.h

@@ -55,7 +55,7 @@ public:
     return static_cast<T*>(Allocate(sizeof(T),AlignOf<T>::Alignment));
   }
   
-  void Deallocate(void */*Ptr*/) {}
+  void Deallocate(void * /*Ptr*/) {}
 
   void PrintStats() const;
 };