More usage of dbm::is_result($r) instead of count($r):

- count() returns very different results and never a boolean (not even false on
  error condition).
- therefore you should NOT use it in boolean expressions. This still *can* be
  done in PHP because of its lazyness. But it is discouraged if it comes to
  more clean code.

Signed-off-by: Roland Häder <roland@mxchange.org>

mod/attach.php

@@ -16,7 +16,7 @@ function attach_init(&$a) {
 	$r = q("SELECT * FROM `attach` WHERE `id` = %d LIMIT 1",
 		intval($item_id)
 	);
-	if(! count($r)) {
+	if(! dbm::is_result($r)) {
 		notice( t('Item was not found.'). EOL);
 		return;
 	}
@@ -29,7 +29,7 @@ function attach_init(&$a) {
 		dbesc($item_id)
 	);
 
-	if(! count($r)) {
+	if(! dbm::is_result($r)) {
 		notice( t('Permission denied.') . EOL);
 		return;
 	}