add more negative tests

Author: y21

tests/ui/iter_out_of_bounds.rs

@@ -57,4 +57,14 @@ fn main() {
 
     for _ in std::iter::once(1).take(2) {}
     //~^ ERROR: this `.take()` call takes more items than the iterator will produce
+
+    for x in [].iter().take(1) {
+        //~^ ERROR: this `.take()` call takes more items than the iterator will produce
+        let _: &i32 = x;
+    }
+
+    // ok, not out of bounds
+    for _ in [1].iter().take(1) {}
+    for _ in [1, 2, 3].iter().take(2) {}
+    for _ in [1, 2, 3].iter().skip(2) {}
 }

tests/ui/iter_out_of_bounds.stderr

@@ -107,5 +107,13 @@ LL |     for _ in std::iter::once(1).take(2) {}
    |
    = note: this operation is useless and the returned iterator will simply yield the same items
 
-error: aborting due to 13 previous errors
+error: this `.take()` call takes more items than the iterator will produce
+  --> $DIR/iter_out_of_bounds.rs:61:14
+   |
+LL |     for x in [].iter().take(1) {
+   |              ^^^^^^^^^^^^^^^^^
+   |
+   = note: this operation is useless and the returned iterator will simply yield the same items
+
+error: aborting due to 14 previous errors