disk: replace into_iter() with equivalent iter()

Fixes clippy warning:

  warning: this .into_iter() call is equivalent to .iter() and will not
  move the slice

BUG=None
TEST=bin/clippy

Change-Id: I5361495f02609dd5e5313b7bc792e663841212ad
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1896091
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/disk/src/composite.rs b/disk/src/composite.rs
index 6c4ae04..0576f41 100644
--- a/disk/src/composite.rs
+++ b/disk/src/composite.rs
@@ -134,7 +134,7 @@
         open_options.read(true);
         let mut disks: Vec<ComponentDiskPart> = proto
             .get_component_disks()
-            .into_iter()
+            .iter()
             .map(|disk| {
                 open_options.write(
                     disk.get_read_write_capability() == cdisk_spec::ReadWriteCapability::READ_WRITE,