[gmime: 1/7] Fixed the build for --disable-crypto

[Jeffrey Stedfast <fejj src gnome org>]

commit baa72116f31ddc52aba1262d2f700f3f3c05e1f2
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Tue Mar 28 12:47:33 2017 -0400

    Fixed the build for --disable-crypto

 gmime/gmime-gpg-context.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gmime/gmime-gpg-context.c b/gmime/gmime-gpg-context.c
index f75f519..175191c 100644
--- a/gmime/gmime-gpg-context.c
+++ b/gmime/gmime-gpg-context.c
@@ -263,6 +263,7 @@ gpg_get_key_exchange_protocol (GMimeCryptoContext *ctx)
        return "application/pgp-keys";
 }
 
+#ifdef ENABLE_CRYPTO
 static void
 set_passphrase_callback (GMimeCryptoContext *context)
 {
@@ -273,6 +274,7 @@ set_passphrase_callback (GMimeCryptoContext *context)
        else
                gpgme_set_passphrase_cb (gpg->ctx, NULL, NULL);
 }
+#endif
 
 static int
 gpg_sign (GMimeCryptoContext *context, gboolean detach, const char *userid,