dasdcopy: Fix error propagation in read path.

[Fish-Git]

This is a copy of JP Sugarbroad 's (taralx's) hercules-390/hyperion issue 241 of the same name.

He writes:

This was caught via -Wmisleading-indentation, which unfortunately has a bunch of misfires due to creative indentation style.

Apparenty due to some missing braces in a multiple if statement sequence in dasdcopy.c incorrect behavior occurs for FBA devices. His patch adds this missing braces to correct the problem.

[Fish-Git]

The patch (merge) that "taralx" (JP Sugarbroad) offers has been committed to my test repository and will be moved into my publicly visible fish-git/hyperion repository and will appear in the next release as soon as I'm finished with what I'm currently working on.

[Fish-Git]

Fixed in commit 4ee084f

[srorso]

Maybe 69905c9? (I had a moment and wanted to see what you had done with the PR? Looks like an easy one to clear.)