The ALTER TABLE fix of check-in [7e5ad8e0ab7ee91a] is no longer needed due

to the changes at check-in [4cf8721f5ceb1fda].  But, we keep the defense
in place as an assert() for extra safety.

FossilOrigin-Name: 230556e859536bbadf0daf8133a9a01ef4f03148b3296723e37bad66e3fc3d82

src/expr.c

@@ -1787,6 +1787,7 @@ void sqlite3ExprListSetName(
   int dequote             /* True to cause the name to be dequoted */
 ){
   assert( pList!=0 || pParse->db->mallocFailed!=0 );
+  assert( pParse->eParseMode!=PARSE_MODE_UNMAP || dequote==0 );
   if( pList ){
     struct ExprList_item *pItem;
     assert( pList->nExpr>0 );