crypto: Remove unnecessary curve25519 header from crypto_digest.h.

 * ADD includes for "torint.h" and "container.h" to crypto_digest.h.
 * ADD includes for "crypto_digest.h" to a couple places in which
   crypto_digest_t was then missing.
 * FIXES part of #24658: https://bugs.torproject.org/24658#comment:30

src/common/crypto_curve25519.h

@@ -6,6 +6,7 @@
 
 #include "testsupport.h"
 #include "torint.h"
+#include "crypto_digest.h"
 #include "crypto_openssl_mgt.h"
 
 /** Length of a curve25519 public key when encoded. */

src/common/crypto_digest.c

@@ -18,6 +18,7 @@
 DISABLE_GCC_WARNING(redundant-decls)
 
 #include <openssl/hmac.h>
+#include <openssl/sha.h>
 
 ENABLE_GCC_WARNING(redundant-decls)
 

src/common/crypto_digest.h

@@ -15,7 +15,8 @@
 
 #include <stdio.h>
 
-#include "crypto_curve25519.h"
+#include "container.h"
+#include "torint.h"
 
 /** Length of the output of our message digest. */
 #define DIGEST_LEN 20

src/test/test_hs_descriptor.c

@@ -9,6 +9,7 @@
 #define HS_DESCRIPTOR_PRIVATE
 
 #include "crypto_ed25519.h"
+#include "crypto_digest.h"
 #include "ed25519_cert.h"
 #include "or.h"
 #include "hs_descriptor.h"