Optimization of the sqlite3SrcListDelete() routine.

FossilOrigin-Name: 1b4acd1ac4a8d24f8804c6d0770f5b0022f569d51742b6954b26e525f04d38ca

1 files changed, 5 insertions, 5 deletions

diff --git a/src/build.c b/src/build.c
index a9ae0e008..2b6342ba9 100644
--- a/src/build.c
+++ b/src/build.c
@@ -4464,15 +4464,15 @@ void sqlite3SrcListDelete(sqlite3 *db, SrcList *pList){
   struct SrcList_item *pItem;
   if( pList==0 ) return;
   for(pItem=pList->a, i=0; i<pList->nSrc; i++, pItem++){
-    sqlite3DbFree(db, pItem->zDatabase);
+    if( pItem->zDatabase ) sqlite3DbFreeNN(db, pItem->zDatabase);
     sqlite3DbFree(db, pItem->zName);
-    sqlite3DbFree(db, pItem->zAlias);
+    if( pItem->zAlias ) sqlite3DbFreeNN(db, pItem->zAlias);
     if( pItem->fg.isIndexedBy ) sqlite3DbFree(db, pItem->u1.zIndexedBy);
     if( pItem->fg.isTabFunc ) sqlite3ExprListDelete(db, pItem->u1.pFuncArg);
     sqlite3DeleteTable(db, pItem->pTab);
-    sqlite3SelectDelete(db, pItem->pSelect);
-    sqlite3ExprDelete(db, pItem->pOn);
-    sqlite3IdListDelete(db, pItem->pUsing);
+    if( pItem->pSelect ) sqlite3SelectDelete(db, pItem->pSelect);
+    if( pItem->pOn ) sqlite3ExprDelete(db, pItem->pOn);
+    if( pItem->pUsing ) sqlite3IdListDelete(db, pItem->pUsing);
   }
   sqlite3DbFreeNN(db, pList);
 }