clang-format: Add test to prevent regression in r221125.

llvm-svn: 221339
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 9e63bd1..b94d0f5 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -1964,7 +1964,8 @@
   verifyFormat("enum E { // comment\n"
                "  ONE,\n"
                "  TWO\n"
-               "};");
+               "};\n"
+               "int i;");
 }
 
 TEST_F(FormatTest, FormatsEnumsWithErrors) {