bhyve_parse_command.c: Don't jump onto non-existent label in CONSUME_ARG()

In v5.10.0-508-gfbf3f3d86a, the 'error' label was removed from
bhyveParseBhyveCommandLine(), however the CONSUME_ARG() macro
still uses it. Fix the macro to return an error instead.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>

src/bhyve/bhyve_parse_command.c

@@ -628,7 +628,7 @@ bhyveParseBhyvePCIArg(virDomainDefPtr def,
     if ((opti + 1) == argc) { \
         virReportError(VIR_ERR_INVALID_ARG, _("Missing argument for '%s'"), \
                        argv[opti]); \
-        goto error; \
+        return -1; \
     } \
     var = argv[++opti]