BUG #6672: Memory leaks in dumputils.c

The following bug has been logged on the website:

Bug reference:      6672
Logged by:          Anna Zaks
Email address:      zaks.anna@gmail.com
PostgreSQL version: 9.1.3
Operating system:   MacOSX
Description:=20=20=20=20=20=20=20=20

There are two memory leaks in dumputils (v9.2.0beta1):

1)
File:   src/bin/scripts/dumputils.c
Location:       line 604, column 11
Description:    Memory is never released; potential leak of memory
pointed to by 'aclitems'

2)
File:   src/bin/scripts/dumputils.c
Location:       line 793, column 10
Description:    Memory is never released; potential leak of memory
pointed to by 'eqpos'

See detailed error paths in the attached html reports.

Issues found by clang static analyzer.