Index: src/vdbeapi.c
==================================================================
--- src/vdbeapi.c
+++ src/vdbeapi.c
@@ -1415,10 +1415,12 @@
   Vdbe *p = (Vdbe*)pStmt;
   rc = vdbeUnbind(p, i);
   if( rc==SQLITE_OK ){
     sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr, zPTtype, xDestructor);
     sqlite3_mutex_leave(p->db->mutex);
+  }else if( xDestructor ){
+    xDestructor(pPtr);
   }
   return rc;
 }
 int sqlite3_bind_text( 
   sqlite3_stmt *pStmt,