shithub: puzzles

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Yikes! Fix a misaimed 'sizeof' which I only got away with because
ints and pointers are usually the same size.

[originally from svn r8809]

--- a/unfinished/group.c

+++ b/unfinished/group.c

@@ -660,7 +660,7 @@

 	for (i = 1; i < w; i++)

 	    for (j = 1; j < w; j++)

 		indices[k++] = i*w+j;

-	shuffle(indices, k, sizeof(indices), rs);

+	shuffle(indices, k, sizeof(*indices), rs);

 	for (i = 0; i < k; i++) {

 	    memcpy(soln2, grid, a);