massdns data import better error handling

feed_dns.py

@@ -167,8 +167,13 @@ class MassDnsParser(Parser):
                     )
                     self.register(record)
                     self.prof.enter_step("parse_massdns")
-            except IndexError:
+            except KeyError:
+                # Unhandle record type
                 continue
+            except IndexError as err:
+                # Aborted file
+                print(err)
+                break
 
 
 PARSERS = {