clang-format: Slightly adapt line break penalties.

Before:
  aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)
                               ->aaaaaaaaa());
After:
  aaaaaaaaaaaaaaaaaaaaaaaa(
      aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188253 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/TokenAnnotator.cpp b/lib/Format/TokenAnnotator.cpp
index 56a1dba..4feddfd 100644
--- a/lib/Format/TokenAnnotator.cpp
+++ b/lib/Format/TokenAnnotator.cpp
@@ -1087,7 +1087,7 @@
   if (Left.is(tok::l_paren) && Line.MightBeFunctionDecl)
     return 100;
   if (Left.opensScope())
-    return Left.ParameterCount > 1 ? prec::Comma : 20;
+    return Left.ParameterCount > 1 ? prec::Comma : 19;
 
   if (Right.is(tok::lessless)) {
     if (Left.is(tok::string_literal)) {