Code Modernization: Avoid returning values in constructors.

Returning values from `__construct()` and `__destruct()` is a deprecated practice starting with PHP 8.6, as per [https://wiki.php.net/rfc/deprecate-return-value-from-construct a recent RFC].

Props iamchitti, Soean.
Fixes #65637.

git-svn-id: https://develop.svn.wordpress.org/trunk@62765 602fd350-edb4-49c9-b593-d223f7449a82

Author: swissspidy

src/wp-includes/class-pop3.php

@@ -64,7 +64,6 @@ function __construct ( $server = '', $timeout = '' ) {
                 set_time_limit($timeout);
             }
         }
-        return true;
     }
 
 	/**

src/wp-includes/pomo/streams.php

@@ -314,7 +314,7 @@ public function __construct( $filename ) {
 			parent::__construct();
 			$this->_str = file_get_contents( $filename );
 			if ( false === $this->_str ) {
-				return false;
+				return;
 			}
 			$this->_pos = 0;
 		}