ed25519_ref10: use uint64_t and int64_t, not long long

src/ext/ed25519/ref10/ge_scalarmult_base.c

@@ -14,7 +14,7 @@ static unsigned char equal(signed char b,signed char c)
 
 static unsigned char negative(signed char b)
 {
-  unsigned long long x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */
+  uint64_t x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */
   x >>= 63; /* 1: yes; 0: no */
   return x;
 }

src/ext/ed25519/ref10/open.c

@@ -6,8 +6,8 @@
 #include "sc.h"
 
 int crypto_sign_open(
-  unsigned char *m,unsigned long long *mlen,
-  const unsigned char *sm,unsigned long long smlen,
+  unsigned char *m,uint64_t *mlen,
+  const unsigned char *sm,uint64_t smlen,
   const unsigned char *pk
 )
 {

src/ext/ed25519/ref10/sign.c

@@ -5,8 +5,8 @@
 #include "sc.h"
 
 int crypto_sign(
-  unsigned char *sm,unsigned long long *smlen,
-  const unsigned char *m,unsigned long long mlen,
+  unsigned char *sm,uint64_t *smlen,
+  const unsigned char *m,uint64_t mlen,
   const unsigned char *sk
 )
 {