Cleanup: clang-10 -Wmisleading-indentation

Also, remove some trailing white space and add missing static
qualifier to free_annotate_event().

client/mysqlbinlog.cc

 /*
    Copyright (c) 2000, 2014, Oracle and/or its affiliates.
-   Copyright (c) 2009, 2014, MariaDB
+   Copyright (c) 2009, 2020, MariaDB
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -151,7 +151,7 @@ enum Exit_status {
 */
 static Annotate_rows_log_event *annotate_event= NULL;
 
-void free_annotate_event()
+static void free_annotate_event()
 {
   if (annotate_event)
   {
@@ -854,7 +854,7 @@ static bool print_row_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
     print_event_info->m_table_map_ignored.get_table(table_id);
   bool skip_event= (ignored_map != NULL);
 
-  /* 
+  /*
      end of statement check:
        i) destroy/free ignored maps
       ii) if skip event
@@ -865,21 +865,21 @@ static bool print_row_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
    */
   if (is_stmt_end)
   {
-    /* 
+    /*
       Now is safe to clear ignored map (clear_tables will also
       delete original table map events stored in the map).
     */
     if (print_event_info->m_table_map_ignored.count() > 0)
       print_event_info->m_table_map_ignored.clear_tables();
 
-    /* 
+    /*
       If there is a kept Annotate event and all corresponding
       rbr-events were filtered away, the Annotate event was not
       freed and it is just the time to do it.
     */
-      free_annotate_event();
+    free_annotate_event();
 
-    /* 
+    /*
        One needs to take into account an event that gets
        filtered but was last event in the statement. If this is
        the case, previous rows events that were written into