Fix a couple of assert() statements so that they cannot fire

when the SQLITE_TESTCTRL_INTERNAL_FUNCTIONS debugging capability
is activated.  dbsqlfuzz f5b347cf167a62fbe08062b2feee65cb9306e363.

Author: D. Richard Hipp

src/vdbeaux.c

@@ -5336,7 +5336,8 @@ sqlite3_value *sqlite3VdbeGetBoundValue(Vdbe *v, int iVar, u8 aff){
   assert( iVar>0 );
   if( v ){
     Mem *pMem = &v->aVar[iVar-1];
-    assert( (v->db->flags & SQLITE_EnableQPSG)==0 );
+    assert( (v->db->flags & SQLITE_EnableQPSG)==0 
+         || (v->db->mDbFlags & DBFLAG_InternalFunc)!=0 );
     if( 0==(pMem->flags & MEM_Null) ){
       sqlite3_value *pRet = sqlite3ValueNew(v->db);
       if( pRet ){
@@ -5356,7 +5357,8 @@ sqlite3_value *sqlite3VdbeGetBoundValue(Vdbe *v, int iVar, u8 aff){
 */
 void sqlite3VdbeSetVarmask(Vdbe *v, int iVar){
   assert( iVar>0 );
-  assert( (v->db->flags & SQLITE_EnableQPSG)==0 );
+  assert( (v->db->flags & SQLITE_EnableQPSG)==0 
+       || (v->db->mDbFlags & DBFLAG_InternalFunc)!=0 );
   if( iVar>=32 ){
     v->expmask |= 0x80000000;
   }else{