branches/zip: buf_buddy_alloc(), buf_buddy_alloc_low(): Correct a mistake

in the function comment.  There is no value BUF_BUDDY_USE_LRU.  The mistake
was made in r1290.

include/buf0buddy.h

@@ -21,10 +21,10 @@ Created December 2006 by Marko Makela
 Allocate a block.  The thread calling this function must hold
 buf_pool_mutex and must not hold buf_pool_zip_mutex or any
 block->mutex.  The buf_pool_mutex may only be released and reacquired
-if lru == BUF_BUDDY_USE_LRU.  This function should only be used for
-allocating compressed page frames or control blocks (buf_page_t).
-Allocated control blocks must be properly initialized immediately
-after buf_buddy_alloc() has returned the memory, before releasing
+if lru != NULL.  This function should only be used for allocating
+compressed page frames or control blocks (buf_page_t).  Allocated
+control blocks must be properly initialized immediately after
+buf_buddy_alloc() has returned the memory, before releasing
 buf_pool_mutex. */
 UNIV_INLINE
 void*

include/buf0buddy.ic

@@ -19,8 +19,7 @@ Created December 2006 by Marko Makela
 /**************************************************************************
 Allocate a block.  The thread calling this function must hold
 buf_pool_mutex and must not hold buf_pool_zip_mutex or any block->mutex.
-The buf_pool_mutex may only be released and reacquired if
-lru == BUF_BUDDY_USE_LRU. */
+The buf_pool_mutex may only be released and reacquired if lru != NULL. */
 UNIV_INTERN
 void*
 buf_buddy_alloc_low(
@@ -70,10 +69,10 @@ buf_buddy_get_slot(
 Allocate a block.  The thread calling this function must hold
 buf_pool_mutex and must not hold buf_pool_zip_mutex or any
 block->mutex.  The buf_pool_mutex may only be released and reacquired
-if lru == BUF_BUDDY_USE_LRU.  This function should only be used for
-allocating compressed page frames or control blocks (buf_page_t).
-Allocated control blocks must be properly initialized immediately
-after buf_buddy_alloc() has returned the memory, before releasing
+if lru != NULL.  This function should only be used for allocating
+compressed page frames or control blocks (buf_page_t).  Allocated
+control blocks must be properly initialized immediately after
+buf_buddy_alloc() has returned the memory, before releasing
 buf_pool_mutex. */
 UNIV_INLINE
 void*