[patch]overallocate memory for curly braces in array_out

Hi,

Attached is a patch that fixes a bug
for miscounting total number of curly braces in output string in array_out.

Example1
{{1,2,3},{4,5,6}} -> dims[0] = 2, dims[1]= 3

- Without the patch
8
- After
3

Example2
N size one-dimensional array -> dims[0] = N

- Without the patch
N
- After
1

I used gdb to confirm the above behavior.

Cheers,
Keiichi Hirobe