Notices PHP en moins sur les listes de plugins

ecrire/inc/plugin.php

@@ -379,7 +379,7 @@ function plugin_necessite($n, $liste) {
 	$msg = array();
 	foreach($n as $need){
 		$id = strtoupper($need['nom']);
-		if ($r = plugin_controler_necessite($liste, $id, $need['compatibilite'])) {
+		if ($r = plugin_controler_necessite($liste, $id, isset($need['compatibilite']) ? $need['compatibilite'] : '')) {
 			$msg[] = $r;
 		}
 	}

ecrire/plugins/infos_plugin.php

@@ -76,13 +76,13 @@ function plugins_infos_plugin($desc, $plug='', $dir_plugins=_DIR_PLUGINS) {
 	if (isset($arbre['meta']))
 		$ret['meta'] = trim(spip_xml_aplatit($arbre['meta']));
 
-	$necessite = info_plugin_normalise_necessite($arbre['necessite']);
+	$necessite = info_plugin_normalise_necessite(isset($arbre['necessite'])?$arbre['necessite']:'');
 	$ret['compatibilite'] = isset($necessite['compatible'])?$necessite['compatible']:'';
 	$ret['necessite'] = $necessite['necessite'];
 	$ret['lib'] = $necessite['lib'];
-	$ret['utilise'] = info_plugin_normalise_utilise($arbre['utilise']);
-	$ret['procure'] = info_plugin_normalise_procure($arbre['procure']);
-	$ret['chemin']  = info_plugin_normalise_chemin($arbre['path']);
+	$ret['utilise'] = info_plugin_normalise_utilise(isset($arbre['utilise'])?$arbre['utilise']:'');
+	$ret['procure'] = info_plugin_normalise_procure(isset($arbre['procure'])?$arbre['procure']:'');
+	$ret['chemin']  = info_plugin_normalise_chemin(isset($arbre['path'])?$arbre['path']:'');
 
 	if (isset($arbre['pipeline']))
 		$ret['pipeline'] = $arbre['pipeline'];
@@ -92,7 +92,7 @@ function plugins_infos_plugin($desc, $plug='', $dir_plugins=_DIR_PLUGINS) {
 	$ret['menu'] = $les_boutons['bouton'];
 	$ret['onglet'] = $les_boutons['onglet'];
 
-	$ret['traduire'] = $arbre['traduire'];
+	$ret['traduire'] = isset($arbre['traduire']) ? $arbre['traduire'] : '';
 		
 	if (isset($arbre['config']))
 		$ret['config'] = spip_xml_aplatit($arbre['config']);