* grub-core/script/argv.c (round_up_exp): unsigned is 32-bit on all

supported platforms. Put a compile time assert for this rather than
	generate a warning with 32-bit shift.

grub-core/script/argv.c

@@ -25,6 +25,8 @@
 static unsigned
 round_up_exp (unsigned v)
 {
+  COMPILE_TIME_ASSERT (sizeof (v) == 4);
+
   v--;
   v |= v >> 1;
   v |= v >> 2;
@@ -32,9 +34,6 @@ round_up_exp (unsigned v)
   v |= v >> 8;
   v |= v >> 16;
 
-  if (sizeof (v) > 4)
-    v |= v >> 32;
-
   v++;
   v += (v == 0);