Make sure to include "crypto/ctype.h" to get ossl_isdigit()

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15319)

engines/e_loader_attic.c

@@ -33,6 +33,7 @@
 #include "internal/asn1.h"       /* For asn1_d2i_read_bio */
 #include "internal/o_dir.h"
 #include "internal/cryptlib.h"
+#include "crypto/ctype.h"        /* For ossl_isdigit */
 #include "crypto/pem.h"          /* For PVK and "blob" PEM headers */
 
 #include "e_loader_attic_err.c"

providers/implementations/storemgmt/file_store.c

@@ -26,6 +26,7 @@
 #include "internal/cryptlib.h"
 #include "internal/o_dir.h"
 #include "crypto/decoder.h"
+#include "crypto/ctype.h"        /* ossl_isdigit() */
 #include "prov/implementations.h"
 #include "prov/bio.h"
 #include "file_store_local.h"