src: add missing punctuation to warning

Author: Trott

src/node_process_events.cc

@@ -93,7 +93,7 @@ Maybe<bool> ProcessEmitExperimentalWarning(Environment* env,
   experimental_warnings.insert(warning);
   std::string message(warning);
   message.append(
-      " is an experimental feature. This feature could change at any time");
+      " is an experimental feature. This feature could change at any time.");
   return ProcessEmitWarningGeneric(env, message.c_str(), "ExperimentalWarning");
 }
 

test/common/measure-memory.js

@@ -45,7 +45,7 @@ function assertSingleDetailedShape(result) {
 function expectExperimentalWarning() {
   common.expectWarning('ExperimentalWarning',
                        'vm.measureMemory is an experimental feature. ' +
-                       'This feature could change at any time');
+                       'This feature could change at any time.');
 }
 
 module.exports = {

test/parallel/test-vfs.js

@@ -34,7 +34,7 @@ throws(() => require(vfsFile), { code: 'MODULE_NOT_FOUND' });
 
 common.expectWarning(
   'ExperimentalWarning',
-  'Module._stat is an experimental feature. This feature could change at any time');
+  'Module._stat is an experimental feature. This feature could change at any time.');
 
 process.on('warning', common.mustCall());