clang-format: Fix regression introduced in r290084.

We still want to try in linewrap within single elements of a 1-column
list.

After:
  Type *Params[] = {PointerType::getUnqual(FunctionType::get(
			Builder.getVoidTy(), Builder.getInt8PtrTy(), false)),
		    Builder.getInt8PtrTy(),
		    Builder.getInt32Ty(),
		    LongType,
		    LongType,
		    LongType};

Before:
  No line break in the first element, so column limit violation.

llvm-svn: 290090
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 70abf3a..9c2c25d 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -6641,7 +6641,7 @@
       "std::this_thread::sleep_for(\n"
       "    std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);",
       ExtraSpaces);
-  verifyFormat("std::vector<MyValues> aaaaaaaaaaaaaaaaaaa{\n"
+  verifyFormat("std::vector<MyValues> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa{\n"
                "    aaaaaaa,\n"
                "    aaaaaaaaaa,\n"
                "    aaaaa,\n"