vala: Check before accessing "name" of parent_symbol which might be null

diff --git a/vala/valadatatype.vala b/vala/valadatatype.vala
index e968ec9899a51dd192cca60f754199f80f876617..7dd0e8dcba91fe7d32fec855a3ea14b2dcf89ffa 100644 (file)
--- a/vala/valadatatype.vala
+++ b/vala/valadatatype.vala
@@ -134,7 +134,7 @@ public abstract class Vala.DataType : CodeNode {
 
                if (type_symbol != null) {
                        Symbol global_symbol = type_symbol;
-                       while (global_symbol.parent_symbol.name != null) {
+                       while (global_symbol.parent_symbol != null && global_symbol.parent_symbol.name != null) {
                                global_symbol = global_symbol.parent_symbol;
                        }