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/notes.php

@@ -82,7 +82,7 @@ function notes_content(&$a,$update = false) {
 
 	);
 
-	if(count($r)) {
+	if(dbm::is_result($r)) {
 		$a->set_pager_total($r[0]['total']);
 		$a->set_pager_itemspage(40);
 	}
@@ -102,7 +102,7 @@ function notes_content(&$a,$update = false) {
 	$parents_arr = array();
 	$parents_str = '';
 
-	if(count($r)) {
+	if(dbm::is_result($r)) {
 		foreach($r as $rr)
 			$parents_arr[] = $rr['item_id'];
 		$parents_str = implode(', ', $parents_arr);
@@ -116,7 +116,7 @@ function notes_content(&$a,$update = false) {
 			dbesc($parents_str)
 		);
 
-		if(count($r)) {
+		if(dbm::is_result($r)) {
 			$items = conv_sort($r,"`commented`");
 
 			$o .= conversation($a,$items,'notes',$update);