Reduce penalty for splitting after "{" in static initializers.

This fixes llvm.org/PR15379.

Before:
const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = { 0x00, 0x00, 0x00, 0x00, 0x00,
                                            0x00,                  // comment
                                            0x00, 0x00, 0x00, 0x00, 0x00,
                                            0x00,                  // comment
                                            0x00, 0x00, 0x00, 0x00 // comment
};

After:
const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment
  0x00, 0x00, 0x00, 0x00              // comment
};

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176262 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 392548d..baeb014 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -612,6 +612,11 @@
                                       "\n"
                                       "  b\n"
                                       "};"));
+  verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n"
+               "  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
+               "  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
+               "  0x00, 0x00, 0x00, 0x00              // comment\n"
+               "};");
 }
 
 //===----------------------------------------------------------------------===//