Respond to review feedback

Author: wesleywiser

src/test/ui/consts/issue-66342.rs

@@ -1,5 +1,7 @@
 // check-pass
 
+// Checks that the compiler does not actually try to allocate 4 TB during compilation and OOM crash.
+
 fn foo() -> [u8; 4 * 1024 * 1024 * 1024 * 1024] {
     unimplemented!()
 }

src/test/ui/consts/issue-66397.rs

@@ -1,5 +1,7 @@
 // build-pass
 
+// Checks that the compiler does not actually try to allocate 4 TB during compilation and OOM crash.
+
 fn main() {
     [0; 4 * 1024 * 1024 * 1024 * 1024];
 }