clang-format: [JS] Fix missing space after 'yield'.

Before:
  class X {
    delete(val) {
      return null;
    }
    * gen() {
      yield[1, 2];
    }
    * gen() {
      yield{a: 1};
    }
  };

After:
  class X {
    delete(val) {
      return null;
    }
    * gen() {
      yield [1, 2];
    }
    * gen() {
      yield {a: 1};
    }
  };

llvm-svn: 285569
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index 66d7253..8c4bced 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -368,6 +368,8 @@
                "  let x = 1;\n"
                "  yield x;\n"
                "  yield* something();\n"
+               "  yield [1, 2];\n"
+               "  yield {a: 1};\n"
                "}");
   verifyFormat("function*\n"
                "    f() {\n"