Make blocking clEnqueueWriteBuffer() non-blocking

src/backend.c

@@ -6519,7 +6519,7 @@ int run_cracker (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *device_param, co
 
               if (device_param->is_opencl == true)
               {
-                if (hc_clEnqueueWriteBuffer (hashcat_ctx, device_param->opencl_command_queue, device_param->opencl_d_combs_c, CL_TRUE, 0, innerloop_left * sizeof (pw_t), device_param->combs_buf, 0, NULL, NULL) == -1) return -1;
+                if (hc_clEnqueueWriteBuffer (hashcat_ctx, device_param->opencl_command_queue, device_param->opencl_d_combs_c, CL_FALSE, 0, innerloop_left * sizeof (pw_t), device_param->combs_buf, 0, NULL, NULL) == -1) return -1;
               }
             }
             else if (user_options->attack_mode == ATTACK_MODE_HYBRID1)