clang-format: Fix unnnecessary line break.

Before:
  aaaaaaaaaa(aaaa(aaaa,
		  aaaa), //
	     aaaa,
             aaaaa);

After:
  aaaaaaaaaa(aaaa(aaaa,
		  aaaa), //
	     aaaa, aaaaa);

llvm-svn: 288119
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index e8e36ab..a1614df 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -1137,6 +1137,12 @@
             format("SomeFunction(a,     // comment\n"
                    "          b,\n"
                    "      c); // comment"));
+  EXPECT_EQ("aaaaaaaaaa(aaaa(aaaa,\n"
+            "                aaaa), //\n"
+            "           aaaa, bbbbb);",
+            format("aaaaaaaaaa(aaaa(aaaa,\n"
+                   "aaaa), //\n"
+                   "aaaa, bbbbb);"));
 }
 
 TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) {