qapi: Change data type of the FOO_lookup generated for enum FOO

Currently, a FOO_lookup is an array of strings terminated by a NULL
sentinel.

A future patch will generate enums with "holes".  NULL-termination
will cease to work then.

To prepare for that, store the length in the FOO_lookup by wrapping it
in a struct and adding a member for the length.

The sentinel will be dropped next.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170822132255.23945-13-marcandre.lureau@redhat.com>
[Basically redone]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1503564371-26090-16-git-send-email-armbru@redhat.com>
[Rebased]

1 files changed, 1 insertions, 1 deletions

diff --git a/tpm.c b/tpm.c
index 111f1ca63f..2d830d072a 100644
--- a/tpm.c
+++ b/tpm.c
@@ -33,7 +33,7 @@ void tpm_register_model(enum TpmModel model)
 
 const TPMDriverOps *tpm_get_backend_driver(const char *type)
 {
-    int i = qapi_enum_parse(TpmType_lookup, type, -1, NULL);
+    int i = qapi_enum_parse(&TpmType_lookup, type, -1, NULL);
 
     return i >= 0 ? be_drivers[i] : NULL;
 }