Autocomplete combobox demo: Reset the internal term property when an …

…invalid selection is made. Fixes #6695 - Autocomplete combobox example does not show suggestion on second try.

demos/autocomplete/combobox.html

@@ -67,6 +67,7 @@
 									// remove invalid value, as it didn't match anything
 									$( this ).val( "" );
 									select.val( "" );
+									input.data( "autocomplete" ).term = "";
 									return false;
 								}
 							}