Remove unreachable code. Fix a shift UB problem introduced yesterday

and discovered by OSSFuzz.

FossilOrigin-Name: 078dbff04a95a001bbd8690ab08038fbb5506899df8290991b53fd1122a4c30c

1 files changed, 3 insertions, 4 deletions

diff --git a/src/auth.c b/src/auth.c
index 83451c29a..48b1c42be 100644
--- a/src/auth.c
+++ b/src/auth.c
@@ -143,7 +143,6 @@ void sqlite3AuthRead(
   Schema *pSchema,      /* The schema of the expression */
   SrcList *pTabList     /* All table that pExpr might refer to */
 ){
-  sqlite3 *db = pParse->db;
   Table *pTab = 0;      /* The table being read */
   const char *zCol;     /* Name of the column of the table */
   int iSrc;             /* Index in pTabList->a[] of table being read */
@@ -151,8 +150,8 @@ void sqlite3AuthRead(
   int iCol;             /* Index of column in table */
 
   assert( pExpr->op==TK_COLUMN || pExpr->op==TK_TRIGGER );
-  assert( !IN_RENAME_OBJECT || db->xAuth==0 );
-  if( db->xAuth==0 ) return;
+  assert( !IN_RENAME_OBJECT );
+  assert( pParse->db->xAuth!=0 );
   iDb = sqlite3SchemaToIndex(pParse->db, pSchema);
   if( iDb<0 ){
     /* An attempt to read a column out of a subquery or other
@@ -183,7 +182,7 @@ void sqlite3AuthRead(
   }else{
     zCol = "ROWID";
   }
-  assert( iDb>=0 && iDb<db->nDb );
+  assert( iDb>=0 && iDb<pParse->db->nDb );
   if( SQLITE_IGNORE==sqlite3AuthReadCol(pParse, pTab->zName, zCol, iDb) ){
     pExpr->op = TK_NULL;
   }