Make snprintf write to the correct location

ot_stats.c

@@ -565,7 +565,7 @@ void stats_issue_event( ot_status_event event, PROTO_FLAG proto, uintptr_t event
         char _debug[512];
         int off = snprintf( _debug, sizeof(_debug), "[%08d] scrp:  ", (unsigned int)(g_now_seconds - ot_start_time)/60 );
         off += fmt_ip6( _debug+off, *ip );
-        off += snprintf( _debug, sizeof(_debug)-off, " - FULL SCRAPE\n" );
+        off += snprintf( _debug+off, sizeof(_debug)-off, " - FULL SCRAPE\n" );
         write( 2, _debug, off );
         ot_full_scrape_request_count++;
       }
@@ -576,7 +576,7 @@ void stats_issue_event( ot_status_event event, PROTO_FLAG proto, uintptr_t event
         char _debug[512];
         int off = snprintf( _debug, sizeof(_debug), "[%08d] scrp:  ", (unsigned int)(g_now_seconds - ot_start_time)/60 );
         off += fmt_ip6(_debug+off, *ip );
-        off += snprintf( _debug, sizeof(_debug)-off, " - FULL SCRAPE\n" );
+        off += snprintf( _debug+off, sizeof(_debug)-off, " - FULL SCRAPE\n" );
         write( 2, _debug, off );
         ot_full_scrape_request_count++;
       }