add base test case

Author: kyleheadley

clang/test/3C/qualifiers.c

@@ -55,11 +55,13 @@ void mixed() {
 
 struct qualifier_struct { int *a; };
 void structs() {
+  struct qualifier_struct a0;
   static struct qualifier_struct a;
   volatile static struct qualifier_struct b;
   const static struct qualifier_struct *c;
   const extern struct qualifier_struct d;
 }
+//CHECK: struct qualifier_struct a0 = {};
 //CHECK: static struct qualifier_struct a = {};
 //CHECK: static volatile struct qualifier_struct b = {};
 //CHECK: static _Ptr<const struct qualifier_struct> c = ((void *)0);