hash: fix compiler warning on ARM

* cipher/md.c (md_open, md_copy): Cast 'char *' to ctx through
'void *'.
* cipher/md4.c (md4_final): Use buf_put_* helper instead of
converting 'char *' to 'u32 *'.
* cipher/md5.c (md5_final): Ditto.
* cipher/rmd160.c (_gcry_rmd160_mixblock, rmd160_final): Ditto.
* cipher/sha1.c (sha1_final): Ditto.
* cipher/sha256.c (sha256_final): Ditto.
* cipher/sha512.c (sha512_final): Ditto.
* cipher/tiger.c (tiger_final): Ditto.
--

Patch fixes 'cast increases required alignment' warnings seen on GCC:

md.c: In function 'md_open':
md.c:318:23: warning: cast increases required alignment of target type [-Wcast-align]
       hd->ctx = ctx = (struct gcry_md_context *) ((char *) hd + n);
                       ^
md.c: In function 'md_copy':
md.c:491:22: warning: cast increases required alignment of target type [-Wcast-align]
       bhd->ctx = b = (struct gcry_md_context *) ((char *) bhd + n);
                      ^
md4.c: In function 'md4_final':
md4.c:258:20: warning: cast increases required alignment of target type [-Wcast-align]
 #define X(a) do { *(u32*)p = le_bswap32((*hd).a) ; p += 4; } while(0)
                    ^
md4.c:259:3: note: in expansion of macro 'X'
   X(A);
   ^
md4.c:258:20: warning: cast increases required alignment of target type [-Wcast-align]
 #define X(a) do { *(u32*)p = le_bswap32((*hd).a) ; p += 4; } while(0)
                    ^
md4.c:260:3: note: in expansion of macro 'X'
   X(B);
   ^
[removed the rest]

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>

1 files changed, 2 insertions, 2 deletions

diff --git a/cipher/rmd160.c b/cipher/rmd160.c
index e6d02f54..2b1f3213 100644
--- a/cipher/rmd160.c
+++ b/cipher/rmd160.c
@@ -411,7 +411,7 @@ _gcry_rmd160_mixblock ( RMD160_CONTEXT *hd, void *blockof64byte )
   char *p = blockof64byte;
 
   transform ( hd, blockof64byte, 1 );
-#define X(a) do { *(u32*)p = hd->h##a ; p += 4; } while(0)
+#define X(a) do { buf_put_le32(p, hd->h##a); p += 4; } while(0)
   X(0);
   X(1);
   X(2);
@@ -474,7 +474,7 @@ rmd160_final( void *context )
   _gcry_burn_stack (burn);
 
   p = hd->bctx.buf;
-#define X(a) do { *(u32*)p = le_bswap32(hd->h##a) ; p += 4; } while(0)
+#define X(a) do { buf_put_le32(p, hd->h##a); p += 4; } while(0)
   X(0);
   X(1);
   X(2);