[PATCH 2/2] migration: unexport migrate_fd_error()

[Laszlo Ersek <lersek@redhat.com>]

The only migrate_fd_error() call sites are in "migration/migration.c",
which is also where we define migrate_fd_error(). Make the function
static, and remove its declaration from "migration/migration.h".

Cc: Juan Quintela <quintela@redhat.com> (maintainer:Migration)
Cc: Leonardo Bras <leobras@redhat.com> (reviewer:Migration)
Cc: Peter Xu <peterx@redhat.com> (reviewer:Migration)
Cc: qemu-trivial@nongnu.org
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2018404
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
 migration/migration.h | 1 -
 migration/migration.c | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/migration/migration.h b/migration/migration.h
index a80b22b703cd..b7c8b67542b8 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -466,7 +466,6 @@ bool  migration_has_all_channels(void);
 uint64_t migrate_max_downtime(void);
 
 void migrate_set_error(MigrationState *s, const Error *error);
-void migrate_fd_error(MigrationState *s, const Error *error);
 
 void migrate_fd_connect(MigrationState *s, Error *error_in);
 
diff --git a/migration/migration.c b/migration/migration.c
index a60a5acee533..91bba630a828 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1220,7 +1220,7 @@ static void migrate_error_free(MigrationState *s)
     }
 }
 
-void migrate_fd_error(MigrationState *s, const Error *error)
+static void migrate_fd_error(MigrationState *s, const Error *error)
 {
     trace_migrate_fd_error(error_get_pretty(error));
     assert(s->to_dst_file == NULL);