maint: use enum typedef for virstorageencryption.h

Continuing the work of consistent enum cleanups; this time in
virstorageencryption.h.

* src/util/virstorageencryption.h (virStorageEncryptionFormat):
Convert to typedef, renaming to avoid collision with function.
(virStorageEncryptionSecret, virStorageEncryption): Directly use
enums.
Signed-off-by: NEric Blake <eblake@redhat.com>

src/util/virstorageencryption.h

@@ -39,23 +39,23 @@ VIR_ENUM_DECL(virStorageEncryptionSecretType)
 typedef struct _virStorageEncryptionSecret virStorageEncryptionSecret;
 typedef virStorageEncryptionSecret *virStorageEncryptionSecretPtr;
 struct _virStorageEncryptionSecret {
-    int type;                   /* enum virStorageEncryptionSecretType */
+    virStorageEncryptionSecretType type;
     unsigned char uuid[VIR_UUID_BUFLEN];
 };
 
-enum virStorageEncryptionFormat {
+typedef enum {
     /* "default" is only valid for volume creation */
     VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT = 0,
     VIR_STORAGE_ENCRYPTION_FORMAT_QCOW, /* Both qcow and qcow2 */
 
     VIR_STORAGE_ENCRYPTION_FORMAT_LAST,
-};
+} virStorageEncryptionFormatType;
 VIR_ENUM_DECL(virStorageEncryptionFormat)
 
 typedef struct _virStorageEncryption virStorageEncryption;
 typedef virStorageEncryption *virStorageEncryptionPtr;
 struct _virStorageEncryption {
-    int format;            /* enum virStorageEncryptionFormat */
+    virStorageEncryptionFormatType format;
 
     size_t nsecrets;
     virStorageEncryptionSecretPtr *secrets;