[PATCH v2 1/2] migration: add savevm_state_handler_remove()

[Scott Cheloha <cheloha@linux.vnet.ibm.com>]

Create a function to abstract common logic needed when removing a
SaveStateEntry element from the savevm_state.handlers queue.

For now we just remove the element.  Soon it will involve additional
cleanup.

Signed-off-by: Scott Cheloha <cheloha@linux.vnet.ibm.com>
---
 migration/savevm.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/migration/savevm.c b/migration/savevm.c
index 8d95e261f6..b2e3b7222a 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -725,6 +725,11 @@ static void savevm_state_handler_insert(SaveStateEntry *nse)
     }
 }
 
+static void savevm_state_handler_remove(SaveStateEntry *se)
+{
+    QTAILQ_REMOVE(&savevm_state.handlers, se, entry);
+}
+
 /* TODO: Individual devices generally have very little idea about the rest
    of the system, so instance_id should be removed/replaced.
    Meanwhile pass -1 as instance_id if you do not already have a clearly
@@ -777,7 +782,7 @@ void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque)
 
     QTAILQ_FOREACH_SAFE(se, &savevm_state.handlers, entry, new_se) {
         if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) {
-            QTAILQ_REMOVE(&savevm_state.handlers, se, entry);
+            savevm_state_handler_remove(se);
             g_free(se->compat);
             g_free(se);
         }
@@ -841,7 +846,7 @@ void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd,
 
     QTAILQ_FOREACH_SAFE(se, &savevm_state.handlers, entry, new_se) {
         if (se->vmsd == vmsd && se->opaque == opaque) {
-            QTAILQ_REMOVE(&savevm_state.handlers, se, entry);
+            savevm_state_handler_remove(se);
             g_free(se->compat);
             g_free(se);
         }
-- 
2.23.0