Author: Richard Guo
Discussion: https://postgr.es/m/CAMbWs483CYjHoLH32_hd3Yq1NJfravNdL2zy7+e7pwvFPJF1RQ@mail.gmail.com
* MemoryContexts may use as a header for chunks of memory they allocate.
*
* MemoryChunk provides a lightweight header that a MemoryContext can use to
- * store a reference back to the block the which the given chunk is allocated
- * on and also an additional 30-bits to store another value such as the size
- * of the allocated chunk.
+ * store a reference back to the block which the given chunk is allocated on
+ * and also an additional 30-bits to store another value such as the size of
+ * the allocated chunk.
*
* Although MemoryChunks are used by each of our MemoryContexts, future
* implementations may choose to implement their own method for storing chunk