Postpone warnings when WP_DEBUG and WP_DEBUG_DISPLAY are set, see #18453

git-svn-id: https://develop.svn.wordpress.org/trunk@18747 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/includes/misc.php

@@ -584,4 +584,27 @@ foreach ( $_wp_admin_css_colors as $color => $color_info ): ?>
 </fieldset>
 <?php
 }
-?>
+
+/**
+ * Show error message only to single site admins or network admins
+ *
+ */  
+function _show_errors_to_admins() {
+	global $_admin_error_messages;
+
+	if ( !is_super_admin() )
+		return;
+
+	if ( !empty($_admin_error_messages) ) {
+		echo '<div class="error">';
+
+		foreach ( (array) $_admin_error_messages as $message ) {
+			echo "<p>$message</p>\n";
+		}
+
+		echo "</div>\n";
+	}
+}
+add_action( 'admin_notices', '_show_errors_to_admins' );
+add_action( 'network_admin_notices', '_show_errors_to_admins' );
+