Initialize Builtins also in single-core mode

Reviewed By: akotulski

Differential Revision: D4272426

fbshipit-source-id: d1a3331

infer/src/backend/InferAnalyze.re

@@ -93,6 +93,7 @@ let print_stdout_legend () => {
 };
 
 let main makefile => {
+  BuiltinDefn.init ();
   switch Config.modified_targets {
   | Some file => MergeCapture.modified_file file
   | None => ()

infer/src/backend/InferAnalyzeExe.re

@@ -43,7 +43,6 @@ let () = {
     Config.print_usage_exit ()
   };
   register_perf_stats_report ();
-  BuiltinDefn.init ();
   if Config.developer_mode {
     Printexc.record_backtrace true
   };