Fix a page-cache reference leak in the btree balancer when there is a corrupt

database.

FossilOrigin-Name: 9285899120dec24ff2944431ad455d7ae217ef408ae2f1a3e7bdfb897099028c

1 files changed, 7 insertions, 3 deletions

diff --git a/src/btree.c b/src/btree.c
index 375d89189..1085bcc72 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -7550,13 +7550,17 @@ static int balance_nonroot(
   pgno = get4byte(pRight);
   while( 1 ){
     rc = getAndInitPage(pBt, pgno, &apOld[i], 0, 0);
-    if( rc==0 && apOld[i]->nFree<0 ){
-      rc = btreeComputeFreeSpace(apOld[i]);
-    }
     if( rc ){
       memset(apOld, 0, (i+1)*sizeof(MemPage*));
       goto balance_cleanup;
     }
+    if( apOld[i]->nFree<0 ){
+      rc = btreeComputeFreeSpace(apOld[i]);
+      if( rc ){
+        memset(apOld, 0, (i)*sizeof(MemPage*));
+        goto balance_cleanup;
+      }
+    }
     nMaxCells += 1+apOld[i]->nCell+apOld[i]->nOverflow;
     if( (i--)==0 ) break;