Add VARHDRSZ where needed. Many places just used 4.

Bruce Momjian <bruce@momjian.us>

Commit: a68a132a6c0f90e5d03e8409e843e6117d5412a2
Author: Bruce Momjian <bruce@momjian.us>
Date: 1997-12-06T22:57:36Z
Releases: 7.1.1
Add VARHDRSZ where needed.  Many places just used 4.

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