Be more consistent with OPENSSL_NO_SHA256.

crypto/sha/sha256t.c

@@ -10,6 +10,14 @@
 #include <openssl/sha.h>
 #include <openssl/evp.h>
 
+#if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA256)
+int main(int argc, char *argv[])
+{
+    printf("No SHA256 support\n");
+    return(0);
+}
+#else
+
 unsigned char app_b1[SHA256_DIGEST_LENGTH] = {
 	0xba,0x78,0x16,0xbf,0x8f,0x01,0xcf,0xea,
 	0x41,0x41,0x40,0xde,0x5d,0xae,0x22,0x23,
@@ -136,3 +144,4 @@ int main ()
 
   return 0;
 }
+#endif