[ESLint] Fix violations when enabling curly rule in eslint.

tracing/tracing/mre/reduce_map_results_cmdline.html

Index: tracing/tracing/mre/reduce_map_results_cmdline.html
diff --git a/tracing/tracing/mre/reduce_map_results_cmdline.html b/tracing/tracing/mre/reduce_map_results_cmdline.html
index c726bcd77e17295c52825a49ad23eb49156020db..bff2a17e85612bd6f0466ab8700db7a377de03d1 100644
--- a/tracing/tracing/mre/reduce_map_results_cmdline.html
+++ b/tracing/tracing/mre/reduce_map_results_cmdline.html
@@ -26,8 +26,9 @@ tr.exportTo('tr.mre', function() {
   }
 
   function reduceMapResultsMain(args) {
-    if (args.length !== 3)
+    if (args.length !== 3) {
       throw new Error('Must provide three arguments');
+    }
 
     var options = {
       key: args[0],
@@ -49,9 +50,10 @@ tr.exportTo('tr.mre', function() {
               reduceFunction);
         });
 
-    if (Object.keys(jobResults.pairs).length !== 0)
+    if (Object.keys(jobResults.pairs).length !== 0) {
       console.log('JOB_RESULTS: ' + JSON.stringify(jobResults.pairs,
           jsonReplacer));
+    }
     jobResults.failures.forEach(function(failure) {
       console.log('JOB_FAILURE: ' + JSON.stringify(failure.asDict()));
     });
@@ -64,7 +66,8 @@ tr.exportTo('tr.mre', function() {
 });
 
 
-if (tr.isHeadless)
+if (tr.isHeadless) {
   quit(tr.mre.reduceMapResultsMain(sys.argv.slice(1)));
+}
 
 </script>