Updated switch statement comments.

* Now comments represent the fact that there may not be curly braces.

test/val/switch2.c

@@ -22,7 +22,7 @@ void switch_no_body(void)
 
 void switch_empty_body(void)
 {
-  switch(0) {};
+  switch(0) {}
 }
 
 /* only worried about this file compiling successfully */