move Vec::extract_if miri test in its appropriate place

Signed-off-by: Petros Angelatos <[email protected]>

Author: petrosagg

src/tools/miri/tests/pass/issues/issue-141032.rs

@@ -169,6 +169,13 @@ fn miri_issue_2759() {
     input.replace_range(0..0, "0");
 }
 
+fn extract_if() {
+    let mut v = vec![Box::new(0u64), Box::new(1u64)];
+    for item in v.extract_if(.., |x| **x == 0) {
+        drop(item);
+    }
+}
+
 fn main() {
     assert_eq!(vec_reallocate().len(), 5);
 
@@ -199,4 +206,5 @@ fn main() {
     swap_remove();
     reverse();
     miri_issue_2759();
+    extract_if();
 }