TypeDefinition: fix exception if interface.prototype.ROYALE_CLASS_INFO doesn't exist

If externs defines an interface, ROYALE_CLASS_INFO may not exist. There are other similar checks for superclasses, so this just handles the same case for interfaces.

frameworks/projects/Reflection/src/main/royale/org/apache/royale/reflection/TypeDefinition.as

diff --git a/frameworks/projects/Reflection/src/main/royale/org/apache/royale/reflection/TypeDefinition.as b/frameworks/projects/Reflection/src/main/royale/org/apache/royale/reflection/TypeDefinition.as
index f53d5cd..51067b4 100755
--- a/frameworks/projects/Reflection/src/main/royale/org/apache/royale/reflection/TypeDefinition.as
+++ b/frameworks/projects/Reflection/src/main/royale/org/apache/royale/reflection/TypeDefinition.as
@@ -428,7 +428,9 @@
                     if ((_kind || kind) == "interface") {
                         //collect.length can expand during the loop below
                         for (i = 0; i < collect.length; i++) {
-                            collect.push.apply(collect, (collect[i].prototype.ROYALE_CLASS_INFO.interfaces || []));
+                            data = collect[i].prototype.ROYALE_CLASS_INFO;
+                            if (!data) continue;
+                            collect.push.apply(collect, (data.interfaces || []));
                         }
                     } else {
                         var superClass:Object = def.superClass_;
@@ -449,7 +451,8 @@
                     for (i=0;i<n;i++) {
                         var iface:Object = collect[i];
                         data = iface.prototype.ROYALE_CLASS_INFO;
-                        results[i] = TypeDefinition.getDefinition(data.names[0].qName,data);
+                        if (!data) continue;
+                        results.push(TypeDefinition.getDefinition(data.names[0].qName,data));
                     }
                 }
             }