Fix remaining VS11 warnings

mtapi_c/src/embb_mtapi_task_t.c

@@ -281,8 +281,8 @@ static mtapi_task_hndl_t embb_mtapi_task_start(
 
             for (mtapi_uint_t kk = 0; kk < task->attributes.num_instances;
               kk++) {
-              was_scheduled = was_scheduled &
-                embb_mtapi_scheduler_schedule_task(scheduler, task, kk);
+              was_scheduled = (mtapi_boolean_t)(was_scheduled &
+                embb_mtapi_scheduler_schedule_task(scheduler, task, kk));
             }
           }
 

mtapi_opencl_c/src/embb_mtapi_opencl.c

@@ -270,7 +270,6 @@ void mtapi_opencl_plugin_initialize(
         NULL, NULL, &err);
     }
     if (CL_SUCCESS == err) {
-      size_t work_group_size;
       err = clGetDeviceInfo(plugin->device_id, CL_DEVICE_MAX_WORK_GROUP_SIZE,
         sizeof(size_t), &plugin->work_group_size, NULL);
     }