Fix for a segfault in my previous cset (about WL#2712 and WL#2977).

sql/sql_load.cc:
  fix for segfault in my previous cset
sql/sql_repl.cc:
  if RBR, log_loaded_block() returns immediately (code moved from sql_load.cc)

sql/sql_load.cc

@@ -948,8 +948,7 @@ READ_INFO::READ_INFO(File file_par, uint tot_length, CHARSET_INFO *cs,
       if (get_it_from_net)
 	cache.read_function = _my_b_net_read;
 
-      if (((LOAD_FILE_INFO*)cache.arg)->thd->current_stmt_binlog_row_based &&
-          mysql_bin_log.is_open())
+      if (mysql_bin_log.is_open())
 	cache.pre_read = cache.pre_close =
 	  (IO_CACHE_CALLBACK) log_loaded_block;
 #endif

sql/sql_repl.cc

@@ -1576,6 +1576,8 @@ int log_loaded_block(IO_CACHE* file)
   if (!(block_len = (char*) file->read_end - (char*) buffer))
     return 0;
   lf_info = (LOAD_FILE_INFO*) file->arg;
+  if (lf_info->thd->current_stmt_binlog_row_based)
+    return 0;
   if (lf_info->last_pos_in_file != HA_POS_ERROR &&
       lf_info->last_pos_in_file >= file->pos_in_file)
     return 0;