SourceLevelDebugPkg/DebugAgent: Check PcdDebugPortHandleBufferSize

Check PcdDebugPortHandleBufferSize before allocate buffer.
PeriodicMode is BOOLEAN type, needn't to use == TRUE in if condition.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17558 6f19259b-4bc3-4df7-8a09-765794883524
2 files changed