FENNEL (TraceSource.h): put protective parentheses around macro args.
FENNEL (TraceSource.h): put protective parentheses around macro args.

[git-p4: depot-paths = "//open/dt/dev/": change = 11528]

LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb