autoclean.c build error in master

[grubles]

Master at 4b69c57 errors when building autoclean.c on OpenBSD 7.5 with clang.

$ cc --version
OpenBSD clang version 16.0.6
Target: amd64-unknown-openbsd7.5

cc plugins/autoclean.c
plugins/autoclean.c:260:7: error: format specifies type 'unsigned long long' but the argument has type 'size_t' (aka 'unsigned long') [-Werror,-Wformat]
                           num_cleaned, subsystem_to_str(&sv));
                           ^~~~~~~~~~~
1 error generated.
gmake: *** [Makefile:301: plugins/autoclean.o] Error 1

[grubles]

This seems to fix it.

diff --git a/plugins/autoclean.c b/plugins/autoclean.c                                                 
index c3febc05a..4da2374e2 100644                                                                      
--- a/plugins/autoclean.c                                                                              
+++ b/plugins/autoclean.c                                                                              
@@ -256,7 +256,7 @@ static struct command_result *clean_finished(struct clean_info *cinfo)
                if (!num_cleaned)                                                                      
                        continue;                                                                      
                                                   
-               plugin_log(plugin, LOG_DBG, "cleaned %"PRIu64" from %s",
+               plugin_log(plugin, LOG_DBG, "cleaned %lu from %s",
                           num_cleaned, subsystem_to_str(&sv));                           
                *total_cleaned(&sv) += num_cleaned; 
                jsonrpc_set_datastore_string(plugin, cinfo->cmd,