qmp: clean out whitespace

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/qmp-commands.hx b/qmp-commands.hx
index d99f235..e47c3ea 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -3571,7 +3571,7 @@
                           "format":"qcow2",
                           "virtual-size":2048000
                       }
-                   } } ] }
+                   } } ] }
 
 EQMP