fix: close stdin and stdout only in repmgrd

closing stdin and stdout might cause problems when using system(), so we
avoid it.

log.c

@@ -140,9 +140,6 @@ bool logger_init(t_configuration_options *opts, const char* ident, const char* l
 
 #endif
 
-	fclose(stdin);
-	fclose(stdout);
-
 	if (*opts->logfile)
 	{
 		freopen(opts->logfile, "a", stderr);

repmgrd.c

@@ -272,6 +272,9 @@ main(int argc, char **argv)
 		exit(ERR_BAD_CONFIG);
 	}
 
+	fclose(stdin);
+	fclose(stdout);
+
 	logger_init(&local_options, progname, local_options.loglevel, local_options.logfacility);
 	if (verbose)
 		logger_min_verbose(LOG_INFO);