[almanah] vfs: Clarify buffer types

[Philip Withnall <pwithnall src gnome org>]

commit 7ea1472643e6a812fd5875e4a8fcb24b76f48b8a
Author: Philip Withnall <philip tecnocode co uk>
Date:   Tue Dec 6 00:56:20 2016 +0000

    vfs: Clarify buffer types
    
    Use guint8 to make it clear that we’re dealing with arrays which are
    indexed as bytes. This also eliminates some ‘pointer arithmetic with
    void*’ warnings from the compiler.

 src/vfs.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/vfs.c b/src/vfs.c
index 323722e..be06b5f 100644
--- a/src/vfs.c
+++ b/src/vfs.c
@@ -94,7 +94,7 @@ struct _AlmanahSQLiteVFS
 
        gboolean decrypted;
 
-       gpointer plain_buffer;
+       guint8  *plain_buffer;
        gsize    plain_buffer_size;     /* Reserved memory size */
        goffset  plain_offset;
        gsize    plain_size;            /* Data size (plain_size <= plain_buffer_size) */
@@ -106,7 +106,7 @@ typedef struct _CipherOperation CipherOperation;
 typedef struct _GpgmeNpmClosure GpgmeNpmClosure;
 
 struct _GpgmeNpmClosure {
-       gpointer buffer;
+       guint8  *buffer;
        gsize    buffer_size;
        goffset  offset;
        gsize    size;