Added NULL commit function to fattree synthetic workload file

.gitignore

@@ -36,3 +36,8 @@
 
 # generated files from test runs
 ross.csv
+
+install-mastiff/include/codes/model-net-method.h
+configure.ac
+configure.ac
+configure.ac
\ No newline at end of file

src/network-workloads/model-net-synthetic-fattree.c

@@ -113,6 +113,7 @@ tw_lptype svr_lp = {
     (pre_run_f) NULL,
     (event_f) svr_event,
     (revent_f) svr_rev_event,
+    (commit_f) NULL,
     (final_f)  svr_finalize,
     (map_f) codes_mapping,
     sizeof(svr_state),