[PATCH] plugins: Add missing 'qemu/qht.h' header

[Philippe Mathieu-Daudé]

When building a plugin we get:

  cc ... -c ../plugins/api.c
  In file included from ../plugins/api.c:43:
  ../plugins/plugin.h:45:16: error: field 'dyn_cb_arr_ht' has incomplete type
       struct qht dyn_cb_arr_ht;
                  ^~~~~~~~~~~~~

Since we expect all headers to be self-contained, add the missing
"qemu/qht.h" to avoid other developers to hit the same problem.

Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
 plugins/plugin.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/plugins/plugin.h b/plugins/plugin.h
index 1aa29dcaddf..55017e35819 100644
--- a/plugins/plugin.h
+++ b/plugins/plugin.h
@@ -13,6 +13,7 @@
 #define _PLUGIN_INTERNAL_H_
 
 #include <gmodule.h>
+#include "qemu/qht.h"
 
 #define QEMU_PLUGIN_MIN_VERSION 0
 
-- 
2.26.3