[439811] Make sure the descriptors will never be null
diff --git a/plugins/org.eclipse.acceleo.common/src/org/eclipse/acceleo/common/internal/utils/LazyEPackageDescriptor.java b/plugins/org.eclipse.acceleo.common/src/org/eclipse/acceleo/common/internal/utils/LazyEPackageDescriptor.java
index 28d6be3..d7a4e08 100644
--- a/plugins/org.eclipse.acceleo.common/src/org/eclipse/acceleo/common/internal/utils/LazyEPackageDescriptor.java
+++ b/plugins/org.eclipse.acceleo.common/src/org/eclipse/acceleo/common/internal/utils/LazyEPackageDescriptor.java
@@ -296,7 +296,7 @@
 	 * @return a new descriptor representing the instance.
 	 */
 	public static List<LazyEPackageDescriptor> create(URI metaURI, ResourceSet set, EPackage.Registry registry) {
-		List<LazyEPackageDescriptor> result = null;
+		List<LazyEPackageDescriptor> result = new ArrayList<LazyEPackageDescriptor>();
 		InputStream is = null;
 		try {
 			is = set.getURIConverter().createInputStream(metaURI, Collections.EMPTY_MAP);