Check to force tools to initialize the ctx id to zero. (#1135)

* Check to force tool to initialize the ctx id to zero.

* initialize rocprofiler_context_id_t with 0 in units tests

* changelog

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Co-authored-by: Gopesh Bhardwaj <gopesh.bhardwaj@amd.com>

[ROCm/rocprofiler-sdk commit: 3f91d90bbc]

projects/rocprofiler-sdk/samples/api_buffered_tracing/client.cpp

@@ -81,7 +81,7 @@ using kernel_symbol_map_t  = std::unordered_map<rocprofiler_kernel_id_t, kernel_
 
 rocprofiler_client_id_t*      client_id        = nullptr;
 rocprofiler_client_finalize_t client_fini_func = nullptr;
-rocprofiler_context_id_t      client_ctx       = {};
+rocprofiler_context_id_t      client_ctx       = {0};
 rocprofiler_buffer_id_t       client_buffer    = {};
 buffer_name_info              client_name_info = {};
 kernel_symbol_map_t           client_kernels   = {};