IDL: Propagate parser errors occurred in InterfaceMembers

tools/idl_parser/idl_parser.py

Index: tools/idl_parser/idl_parser.py
diff --git a/tools/idl_parser/idl_parser.py b/tools/idl_parser/idl_parser.py
index bfe6698771ff5400ea36ad4bd21b56f9c293adba..bdd6dc74cd6da14fbc69da4d80ba1a96d52a4831 100755
--- a/tools/idl_parser/idl_parser.py
+++ b/tools/idl_parser/idl_parser.py
@@ -264,6 +264,11 @@ class IDLParser(object):
       p[2].AddChildren(p[1])
       p[0] = ListFromConcat(p[2], p[3])
 
+  # [9.1] Error recovery for InterfaceMembers
+  def p_InterfaceMembersError(self, p):
+    """InterfaceMembers : error"""
+    p[0] = self.BuildError(p, 'InterfaceMembers')
+
   # [10] Removed unsupported: Serializer
   def p_InterfaceMember(self, p):
     """InterfaceMember : Const