db_berkeley: get rid of compile warnings

modules/db_berkeley/bdb_lib.c

@@ -499,7 +499,7 @@ void bdblib_log(int op, bdb_db_p _db_p, bdb_table_p _tp, char* _msg, int len)
 			puts(buf);
 		
 		if ((_tp->logflags & JLOG_SYSLOG) == JLOG_SYSLOG)
-			syslog(LOG_LOCAL6, buf);
+			syslog(LOG_LOCAL6, "%s", buf);
 		
 		if(_tp->fp) 
 		{

modules/db_berkeley/km_bdb_lib.c

@@ -539,7 +539,7 @@ void km_bdblib_log(int op, table_p _tp, char* _msg, int len)
 			puts(buf);
 		
 		if ((_tp->logflags & JLOG_SYSLOG) == JLOG_SYSLOG)
-			syslog(LOG_LOCAL6, buf);
+			syslog(LOG_LOCAL6, "%s", buf);
 		
 		if(_tp->fp) 
 		{