updated comments

tests-err/test66.c

@@ -1,3 +1,3 @@
 f (__builtin_va_alist )
-     int __builtin_va_alist;...		// expected declaration specifiers before ‘...’ token
+     int __builtin_va_alist;...		     // expected declaration specifiers before ‘...’ token
 { }									// expected ‘{’ at end of input

tests-err/test71.c

@@ -1,6 +1,6 @@
 f (__builtin_va_alist )
-     int __builtin_va_alist;...
+     int __builtin_va_alist;...          // expected declaration specifiers before ‘...’ token
 {
 
-}
+}                                        // expected ‘{’ at end of input