[PATCH] iotests: fix usage -machine accel= together with -accel option

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Commit 6f6e1698a68ceb made these options incompatible, but it breaks
iotests:
  -accel qtest comes from QEMUQtestMachine
  and
  -machine accel=qtest comes from QEMU_OPTIONS

After this patch, -accel may still be duplicated, but this is less
invasive.

Also, fix extra comma in comment, added by the same 6f6e1698a68ceb

Fixes: 6f6e1698a68ceb
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 vl.c                     | 2 +-
 tests/qemu-iotests/check | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/vl.c b/vl.c
index 86474a55c9..9fb859969c 100644
--- a/vl.c
+++ b/vl.c
@@ -2779,7 +2779,7 @@ static void configure_accelerators(const char *progname)
         for (tmp = accel_list; !accel_initialised && tmp && *tmp; tmp++) {
             /*
              * Filter invalid accelerators here, to prevent obscenities
-             * such as "-machine accel=tcg,,thread=single".
+             * such as "-machine accel=tcg,thread=single".
              */
             if (accel_find(*tmp)) {
                 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index 90970b0549..2890785a10 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -587,13 +587,13 @@ export QEMU_PROG="$(type -p "$QEMU_PROG")"
 
 case "$QEMU_PROG" in
     *qemu-system-arm|*qemu-system-aarch64)
-        export QEMU_OPTIONS="-nodefaults -display none -machine virt,accel=qtest"
+        export QEMU_OPTIONS="-nodefaults -display none -machine virt -accel qtest"
         ;;
     *qemu-system-tricore)
-        export QEMU_OPTIONS="-nodefaults -display none -machine tricore_testboard,accel=qtest"
+        export QEMU_OPTIONS="-nodefaults -display none -machine tricore_testboard -accel qtest"
         ;;
     *)
-        export QEMU_OPTIONS="-nodefaults -display none -machine accel=qtest"
+        export QEMU_OPTIONS="-nodefaults -display none -accel qtest"
         ;;
 esac
 
-- 
2.21.0