add inline-const test for elided lifetimes being infer vars

Author: zirconium-n

tests/ui/inline-const/elided-lifetime-being-infer-vars.rs

@@ -0,0 +1,11 @@
+// check-pass
+
+#![feature(inline_const)]
+
+fn main() {
+    let _my_usize = const {
+        let a = 10_usize;
+        let b: &'_ usize = &a;
+        *b
+    };
+}