fix leak and error check order

Author: weltling

ext/pgsql/pgsql.c

@@ -4043,12 +4043,12 @@ PHP_FUNCTION(pg_copy_to)
 							  &pg_delim, &pg_delim_len, &pg_null_as, &pg_null_as_len) == FAILURE) {
 		return;
 	}
-	if (!pg_delim) {
-		pg_delim = "\t";
-	}
 
 	ZEND_FETCH_RESOURCE2(pgsql, PGconn *, &pgsql_link, id, "PostgreSQL link", le_link, le_plink);
 
+	if (!pg_delim) {
+		pg_delim = "\t";
+	}
 	if (!pg_null_as) {
 		pg_null_as = safe_estrdup("\\\\N");
 		free_pg_null = 1;
@@ -4176,6 +4176,9 @@ PHP_FUNCTION(pg_copy_from)
 							  &pg_delim, &pg_delim_len, &pg_null_as, &pg_null_as_len) == FAILURE) {
 		return;
 	}
+
+	ZEND_FETCH_RESOURCE2(pgsql, PGconn *, &pgsql_link, id, "PostgreSQL link", le_link, le_plink);
+
 	if (!pg_delim) {
 		pg_delim = "\t";
 	}
@@ -4184,8 +4187,6 @@ PHP_FUNCTION(pg_copy_from)
 		pg_null_as_free = 1;
 	}
 
-	ZEND_FETCH_RESOURCE2(pgsql, PGconn *, &pgsql_link, id, "PostgreSQL link", le_link, le_plink);
-
 	spprintf(&query, 0, "COPY %s FROM STDIN DELIMITERS E'%c' WITH NULL AS E'%s'", table_name, *pg_delim, pg_null_as);
 	while ((pgsql_result = PQgetResult(pgsql))) {
 		PQclear(pgsql_result);