Printf test logs missing last character

[jphickey]

Describe the bug
In the CFE coverage tests, assertions for "printf" include the message format string being checked for, but it truncates the last character. For example:

[ PASS] 02.006 es_UT.c:724 - Printf generated: '%s: Startup Sync failed - Applications may not have all starte' (1) >  (0)
[ PASS] 02.007 es_UT.c:725 - Printf generated: '%s: Startup Sync failed - Applications may not have all initialize' (1) >  (0)

To Reproduce
Run ES coverage test, view logs

Expected behavior
Should include the full string, not cut off the last char.

System observed on:
Ubuntu

Additional context
Off by one error in the string processing

Reporter Info
Joseph Hickey, Vantage Systems, Inc.