Fix #1763, last char truncated in coverage log output

The "MessageCheck_Impl" routine used for printf/syslog checks
was incorrectly truncating the last character of the log message.

modules/core_private/ut-stubs/src/ut_support.c

@@ -848,8 +848,8 @@ bool CFE_UtAssert_MessageCheck_Impl(bool Status, const char *File, uint32 Line,
     /* Need to make a copy, as the input string is "const" */
     ScrubbedFormat[0] = '\'';
     memcpy(&ScrubbedFormat[1], FormatString, FormatLen);
-    ScrubbedFormat[FormatLen]     = '\'';
-    ScrubbedFormat[FormatLen + 1] = 0;
+    ScrubbedFormat[FormatLen + 1] = '\'';
+    ScrubbedFormat[FormatLen + 2] = 0;
 
     return CFE_UtAssert_GenericSignedCompare_Impl(Status, CFE_UtAssert_Compare_GT, 0, File, Line, Desc, ScrubbedFormat,
                                                   "");