Nicer tests

Author: glankk

testsuite/clang-preprocessor-tests/macro_fn_va_opt.c

@@ -6,8 +6,8 @@
 int main()
 {
     PF( "%s", "Hello" );
-    PF( a, );
-    PF( a );
+    PF( "Hello", );
+    PF( "Hello" );
     PF( , );
     PF( );
 }