rust-dirstate-entry: fix typo in panic message

Differential Revision: https://phab.mercurial-scm.org/D12446

rust/hg-core/src/dirstate/entry.rs

@@ -423,7 +423,7 b' impl DirstateEntry {'
     ) {
         if !self.any_tracked() {
             // TODO: return an Option instead?
-            panic!("Accessing v1_state of an untracked DirstateEntry")
+            panic!("Accessing v2_data of an untracked DirstateEntry")
         }
         let wdir_tracked = self.flags.contains(Flags::WDIR_TRACKED);
         let p1_tracked = self.flags.contains(Flags::P1_TRACKED);