clang-format: Fix corner case in builder-type calls.

Before:
  aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()->aaaaaaaaaaaaaae(
                                                 0)->aaaaaaaaaaaaaaa();

After:
  aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()
      ->aaaaaaaaaaaaaae(0)
      ->aaaaaaaaaaaaaaa();

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189655 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index c5e0bcd..eee8888 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -2890,6 +2890,9 @@
   verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
                "    .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
                "    .aaaaaaaaaaaaaaa();");
+  verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n"
+               "    ->aaaaaaaaaaaaaae(0)\n"
+               "    ->aaaaaaaaaaaaaaa();");
 }
 
 TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {