Remove assertion that can be triggered on bad input.

clang-format can't do anything useful, so it should leave the remainder
of the line unchanged, but it should not assert/segfault.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177530 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 2a3d66d..0edb191 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -2413,7 +2413,10 @@
                "B { int x; }");
 }
 
-TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) { verifyFormat("{"); }
+TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
+  verifyFormat("{");
+  verifyFormat("#})");
+}
 
 TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
   verifyFormat("do {\n}");