Frontend/XML: Add support for printing nested structures, patch by Martin Vejnár!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115041 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Coverage/c-language-features.inc b/test/Coverage/c-language-features.inc
index 3548132..0ff1237 100644
--- a/test/Coverage/c-language-features.inc
+++ b/test/Coverage/c-language-features.inc
@@ -188,3 +188,11 @@
 
   x = (struct f10_s0) { .iv0 = "name" };
 }
+
+// Nested structures.
+struct s11 {
+  struct s11_2 {
+    int f0;
+  } f0;
+  int f1;
+};