Jim Warner 4aa917455c top: fix the bug affecting certain Find/Locate results
When 'Other Filtering' was introduced the idea of what
constituted a displayed row changed. No longer was any
call to task_show assured of consuming one screen row.
Now the determining factor was whether or not the rows
were empty. This worked Ok until a certain Find string
was active then the entire display could be corrupted.

With Find active, the task_show() function alters each
returned row while highlighting each visible match. If
the search was on a single byte value & matched at the
beginning of a row the match got overwritten with '\0'
which then appears empty upon return to window_show().
So that row would not be counted as having been shown.

This was best illustrated with a Find on a single ' '.

This patch will restore proper 'Find/Locate' behavior.

Reference(s):
commit 5edc6fb3174f1fd02bbfca61ec6d8a3a2e12f71c

Signed-off-by: Jim Warner <james.warner@comcast.net>
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Command line and full screen utilities for browsing procfs, a "pseudo" file system dynamically generated by Linux to provide information about the status of entries in its process table.
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