Re: Check return value of pclose() correctly

The following review has been posted through the commitfest application:
make installcheck-world:  tested, passed
Implements feature:       tested, passed
Spec compliant:           tested, passed
Documentation:            tested, passed

Hi Peter,
This is a review of the pclose return value check patch:

Contents & Purpose:
Purpose of this patch is to properly handle return value of pclose (indirectly, return from ClosePipeStream).

Initial Run:
The patch applies cleanly to HEAD. The regression tests all pass
successfully against the new patch.

Conclusion:
At some places pclose return value is handled and this patch adds return value check for remaining values. 
Implementation is in sync with existing handling of pclose.

- Ankit K Pandey