Fix quad checksum bug.

CHANGES

@@ -5,6 +5,9 @@
 
  Changes between 0.9.1c and 0.9.2
 
+  *) DES quad checksum was broken on big-endian architectures. Fixed.
+     [Ben Laurie]
+
   *) Comment out two functions in bio.h that aren't implemented. Fix up the
      Win32 test batch file so it (might) work again. The Win32 test batch file
      is horrible: I feel ill....

crypto/des/qud_cksm.c

@@ -133,7 +133,7 @@ des_cblock seed;
 				}
 			else
 				{
-				lp=&output[out_count-i-1];
+				lp=&output[(out_count-i-1)*8];
 				l2n(z1,lp);
 				l2n(z0,lp);
 				}