qemu-option: Remove qemu_opts_create_nofail

This is a boiler-plate _nofail variant of qemu_opts_create. Remove and
use error_abort in call sites.

null/0 arguments needs to be added for the id and fail_if_exists fields
in affected callsites due to argument inconsistency between the normal and
no_fail variants.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
diff --git a/util/qemu-config.c b/util/qemu-config.c
index 04da942..7973659 100644
--- a/util/qemu-config.c
+++ b/util/qemu-config.c
@@ -311,7 +311,7 @@
                 error_free(local_err);
                 goto out;
             }
-            opts = qemu_opts_create_nofail(list);
+            opts = qemu_opts_create(list, NULL, 0, &error_abort);
             continue;
         }
         if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {