[PATCH] correct the arguments of migrate_speed

[Wen Congyang <wency@xxxxxxxxxxxxxx>]

When we set migrate_speed by json, we receive the following
error message:
libvirtError: internal error unable to execute QEMU command
'migrate_set_speed': Invalid parameter type, expected: number

The reason is that: the arguments of migrate_set_speed
by json is json number, not json string.

Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx>

---
 src/qemu/qemu_monitor_json.c |   10 +++-------
 1 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index da51a4f..2576dc5 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -1453,17 +1453,13 @@ int qemuMonitorJSONSetMigrationSpeed(qemuMonitorPtr mon,
                                      unsigned long bandwidth)
 {
     int ret;
-    char *bandwidthstr;
     virJSONValuePtr cmd;
     virJSONValuePtr reply = NULL;
-    if (virAsprintf(&bandwidthstr, "%lum", bandwidth) < 0) {
-        virReportOOMError();
-        return -1;
-    }
     cmd = qemuMonitorJSONMakeCommand("migrate_set_speed",
-                                     "s:value", bandwidthstr,
+                                     "U:value",
+                                     /* 1048576 = 1024 * 1024 */
+                                     (uint64_t)bandwidth * 1048576,
                                      NULL);
-    VIR_FREE(bandwidthstr);
     if (!cmd)
         return -1;
 
-- 
1.7.1

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