clang-format: [JS] Keep space after closure style comments.

Before:
  var x = /** @type {foo} */ (bar);

After:
  var x = /** @type {foo} */(bar);

llvm-svn: 208093
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index 153b075..ee49912 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -102,5 +102,9 @@
   verifyFormat("function() { return [hello, world]; }");
 }
 
+TEST_F(FormatTestJS, ClosureStyleComments) {
+  verifyFormat("var x = /** @type {foo} */ (bar);");
+}
+
 } // end namespace tooling
 } // end namespace clang