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/editpost.php

@@ -78,7 +78,7 @@ function editpost_content(&$a) {
 		$r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1",
 			intval(local_user())
 		);
-		if(count($r)) {
+		if(dbm::is_result($r)) {
 			$mail_enabled = true;
 			if(intval($r[0]['pubmail']))
 				$pubmail_enabled = true;