clang-format: Better understand Lambda poarameters.

Before:
  auto PointerBinding = [](const char * S) {};

After:
  auto PointerBinding = [](const char *S) {};

This fixes llvm.org/PR17618.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193054 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 16471b7..6a2d0d8 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -3933,6 +3933,7 @@
   verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
   verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
   verifyFormat("auto a = [](int **&, int ***) {};");
+  verifyFormat("auto PointerBinding = [](const char *S) {};");
   verifyFormat("typedef typeof(int(int, int)) *MyFunc;");
 
   verifyIndependentOfContext("InvalidRegions[*R] = 0;");