Index: src/btree.c
==================================================================
--- src/btree.c
+++ src/btree.c
@@ -6168,11 +6168,11 @@
   MemPage *pTrunk = 0;                /* Free-list trunk page */
   Pgno iTrunk = 0;                    /* Page number of free-list trunk page */ 
   MemPage *pPage1 = pBt->pPage1;      /* Local reference to page 1 */
   MemPage *pPage;                     /* Page being freed. May be NULL. */
   int rc;                             /* Return Code */
-  int nFree;                          /* Initial number of pages on free-list */
+  u32 nFree;                          /* Initial number of pages on free-list */
 
   assert( sqlite3_mutex_held(pBt->mutex) );
   assert( CORRUPT_DB || iPage>1 );
   assert( !pMemPage || pMemPage->pgno==iPage );