[PATCH 07/19] qapi/introspect: assert schema.lookup_type did not fail

[John Snow]

lookup_type() is capable of returning None, but introspect.py isn't
prepared for that. (And rightly so, if these built-in types are absent,
something has gone hugely wrong.)

RFC: This is slightly cumbersome as-is, but a patch at the end of this series
tries to address it with some slightly slicker lookup functions that
don't need as much hand-holding.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 scripts/qapi/introspect.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/scripts/qapi/introspect.py b/scripts/qapi/introspect.py
index 67c7d89aae0..42981bce163 100644
--- a/scripts/qapi/introspect.py
+++ b/scripts/qapi/introspect.py
@@ -227,10 +227,14 @@ def _use_type(self, typ: QAPISchemaType) -> str:
 
         # Map the various integer types to plain int
         if typ.json_type() == 'int':
-            typ = self._schema.lookup_type('int')
+            tmp = self._schema.lookup_type('int')
+            assert tmp is not None
+            typ = tmp
         elif (isinstance(typ, QAPISchemaArrayType) and
               typ.element_type.json_type() == 'int'):
-            typ = self._schema.lookup_type('intList')
+            tmp = self._schema.lookup_type('intList')
+            assert tmp is not None
+            typ = tmp
         # Add type to work queue if new
         if typ not in self._used_types:
             self._used_types.append(typ)
-- 
2.41.0