Administration: Avoid using WP_MAX_MEMORY_LIMIT default that is sma…

…ller than `WP_MEMORY_LIMIT`.

Props eclare, dd32, pbearne.
Fixes #36426.


git-svn-id: https://develop.svn.wordpress.org/trunk@58937 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/default-constants.php

@@ -58,6 +58,8 @@ function wp_initial_constants() {
 			define( 'WP_MAX_MEMORY_LIMIT', $current_limit );
 		} elseif ( -1 === $current_limit_int || $current_limit_int > 268435456 /* = 256M */ ) {
 			define( 'WP_MAX_MEMORY_LIMIT', $current_limit );
+		} elseif ( wp_convert_hr_to_bytes( WP_MEMORY_LIMIT ) > 268435456 /* = 256M */ ) {
+			define( 'WP_MAX_MEMORY_LIMIT', WP_MEMORY_LIMIT );
 		} else {
 			define( 'WP_MAX_MEMORY_LIMIT', '256M' );
 		}