grunt/change-version.js: Add missing semicolon

I don't wanna get diabetes. 
Obey The Mickens!: https://vimeo.com/111122950#t=14m9s

[ci skip]

grunt/change-version.js

@@ -68,7 +68,7 @@ function replaceRecursively(directory, excludedDirectories, allowedExtensions, o
       }
     });
   walkAsync(directory, excludedDirectories, updateFile, function (err) {
-    console.error('ERROR while traversing directory!:')
+    console.error('ERROR while traversing directory!:');
     console.error(err);
     process.exit(1);
   });