py: fix null pointer dereference in mpz.c, fix missing va_end in warning.c
diff --git a/py/mpz.c b/py/mpz.c
index cceb079..1dd177b 100644
--- a/py/mpz.c
+++ b/py/mpz.c
@@ -1652,7 +1652,10 @@
// assumes enough space as calculated by mp_int_format_size
// returns length of string, not including null byte
mp_uint_t mpz_as_str_inpl(const mpz_t *i, mp_uint_t base, const char *prefix, char base_char, char comma, char *str) {
- if (str == NULL || base < 2 || base > 32) {
+ if (str == NULL) {
+ return 0;
+ }
+ if (base < 2 || base > 32) {
str[0] = 0;
return 0;
}