Initialize new exception handler state.

Change-Id: Ibcb699760837b9ec1508d6af948a272a81ddcd02


[ROCm/ROCR-Runtime commit: 0159aea4c9]

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/amd_aql_queue.cpp

@@ -95,6 +95,7 @@ AqlQueue::AqlQueue(GpuAgent* agent, size_t req_size_pkts, HSAuint32 node_id, Scr
       pm4_ib_buf_(nullptr),
       pm4_ib_size_b_(0x1000),
       dynamicScratchState(0),
+      exceptionState(0),
       suspended_(false),
       priority_(HSA_QUEUE_PRIORITY_NORMAL),
       exception_signal_(nullptr) {