libxl: change most remaining LIBXL_LOG to LOG in libxl_qmp.c

Coding style has recently been changed for libxl. The convenience
macro LOG() has been introduced, and invocations of the old macro
LIBXL__LOG() are to be replaced with it. Change occurences of the
old macro to the new one in the functions qmp_handle_response()
and qmp_handle_error_response(). The new macros need access to a
local libxl__gc *gc, so add it as a parameter to both these functions,
and pass the instance in qmp_next() down the call chain to
qmp_handle_response() and in turn to qmp_handle_error_response().

Suggested-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Kelley Nielsen <kelleynnn@gmail.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
[ijc -- reverted one unintential w/s change]

tools/libxl/libxl_qmp.c

@@ -260,7 +260,7 @@ static callback_id_pair *qmp_get_callback_from_id(libxl__qmp_handler *qmp,
     return NULL;
 }
 
-static void qmp_handle_error_response(libxl__qmp_handler *qmp,
+static void qmp_handle_error_response(libxl__gc *gc, libxl__qmp_handler *qmp,
                                       const libxl__json_object *resp)
 {
     callback_id_pair *pp = qmp_get_callback_from_id(qmp, resp);
@@ -283,19 +283,17 @@ static void qmp_handle_error_response(libxl__qmp_handler *qmp,
         free(pp);
     }
 
-    LIBXL__LOG(qmp->ctx, LIBXL__LOG_ERROR,
-               "received an error message from QMP server: %s",
-               libxl__json_object_get_string(resp));
+    LOG(ERROR, "received an error message from QMP server: %s",
+        libxl__json_object_get_string(resp));
 }
 
-static int qmp_handle_response(libxl__qmp_handler *qmp,
+static int qmp_handle_response(libxl__gc *gc, libxl__qmp_handler *qmp,
                                const libxl__json_object *resp)
 {
     libxl__qmp_message_type type = LIBXL__QMP_MESSAGE_TYPE_INVALID;
 
     type = qmp_response_type(qmp, resp);
-    LIBXL__LOG(qmp->ctx, LIBXL__LOG_DEBUG,
-               "message type: %s", libxl__qmp_message_type_to_string(type));
+    LOG(DEBUG, "message type: %s", libxl__qmp_message_type_to_string(type));
 
     switch (type) {
     case LIBXL__QMP_MESSAGE_TYPE_QMP:
@@ -317,14 +315,14 @@ static int qmp_handle_response(libxl__qmp_handler *qmp,
                 /* tell that the id have been processed */
                 qmp->wait_for_id = 0;
             }
-            LIBXL_STAILQ_REMOVE(
-                &qmp->callback_list, pp, callback_id_pair, next);
+            LIBXL_STAILQ_REMOVE(&qmp->callback_list, pp, callback_id_pair,
+                                next);
             free(pp);
         }
         return 0;
     }
     case LIBXL__QMP_MESSAGE_TYPE_ERROR:
-        qmp_handle_error_response(qmp, resp);
+        qmp_handle_error_response(gc, qmp, resp);
         return -1;
     case LIBXL__QMP_MESSAGE_TYPE_EVENT:
         return 0;
@@ -481,7 +479,7 @@ static int qmp_next(libxl__gc *gc, libxl__qmp_handler *qmp)
                 o = libxl__json_parse(gc, s);
 
                 if (o) {
-                    rc = qmp_handle_response(qmp, o);
+                    rc = qmp_handle_response(gc, qmp, o);
                 } else {
                     LOG(ERROR, "Parse error of : %s\n", s);
                     return -1;