qemu-option: pass NULL rather than 0 to the id of qemu_opts_set()

The second argument 'id' is a pointer. Pass NULL rather than 0.

Signed-off-by: Masahiro Yamada <[email protected]>
Message-Id: <[email protected]>
Reviewed-by: Markus Armbruster <[email protected]>
Signed-off-by: Markus Armbruster <[email protected]>

Author: masahir0y

softmmu/vl.c

@@ -3059,19 +3059,19 @@ void qemu_init(int argc, char **argv, char **envp)
                 }
                 break;
             case QEMU_OPTION_kernel:
-                qemu_opts_set(qemu_find_opts("machine"), 0, "kernel", optarg,
+                qemu_opts_set(qemu_find_opts("machine"), NULL, "kernel", optarg,
                               &error_abort);
                 break;
             case QEMU_OPTION_initrd:
-                qemu_opts_set(qemu_find_opts("machine"), 0, "initrd", optarg,
+                qemu_opts_set(qemu_find_opts("machine"), NULL, "initrd", optarg,
                               &error_abort);
                 break;
             case QEMU_OPTION_append:
-                qemu_opts_set(qemu_find_opts("machine"), 0, "append", optarg,
+                qemu_opts_set(qemu_find_opts("machine"), NULL, "append", optarg,
                               &error_abort);
                 break;
             case QEMU_OPTION_dtb:
-                qemu_opts_set(qemu_find_opts("machine"), 0, "dtb", optarg,
+                qemu_opts_set(qemu_find_opts("machine"), NULL, "dtb", optarg,
                               &error_abort);
                 break;
             case QEMU_OPTION_cdrom:
@@ -3182,7 +3182,7 @@ void qemu_init(int argc, char **argv, char **envp)
                 }
                 break;
             case QEMU_OPTION_bios:
-                qemu_opts_set(qemu_find_opts("machine"), 0, "firmware", optarg,
+                qemu_opts_set(qemu_find_opts("machine"), NULL, "firmware", optarg,
                               &error_abort);
                 break;
             case QEMU_OPTION_singlestep: