Make asn1_d2i_read_bio accessible from STORE

This is needed for the upcoming "file" scheme STORE loader.
Reviewed-by: NMatt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3542)

crypto/asn1/a_d2i_fp.c

@@ -13,8 +13,7 @@
 #include "internal/numbers.h"
 #include <openssl/buffer.h>
 #include <openssl/asn1.h>
-
-static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb);
+#include "internal/asn1_int.h"
 
 #ifndef NO_OLD_ASN1
 # ifndef OPENSSL_NO_STDIO
@@ -92,7 +91,7 @@ void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x)
 
 #define HEADER_SIZE   8
 #define ASN1_CHUNK_INITIAL_SIZE (16 * 1024)
-static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
+int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
 {
     BUF_MEM *b;
     unsigned char *p;

crypto/include/internal/asn1_int.h

@@ -99,3 +99,4 @@ struct asn1_pctx_st {
 } /* ASN1_PCTX */ ;
 
 int asn1_valid_host(const ASN1_STRING *host);
+int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb);