Style fixes.

src/Memory/UniquePtrList.hpp

@@ -56,7 +56,7 @@ namespace ArbUt {
         }
 
         inline void Append(ValueT* value) { _vector.push_back(value); }
-        inline BorrowedPtr<ValueT> operator[] (size_t index) const { return At(index); }
+        inline BorrowedPtr<ValueT> operator[](size_t index) const { return At(index); }
 
         inline size_t Count() const { return _vector.size(); }