Merge branch 'jk/maint-stash-oob' into maint

* jk/maint-stash-oob:
  stash: fix false positive in the invalid ref test.
  stash: fix accidental apply of non-existent stashes

Conflicts:
	t/t3903-stash.sh

diff --cc git-stash.sh
Simple merge

diff --cc t/t3903-stash.sh
index 0bd667f04b8e7c5a55fd0025bcf93e7f894ef394,3c91f48b204764804fbf6d1cef1133d3fe518b87..5c725406422dcedb6c6d5e5d61cfc80f87d3595c
--- 1/t/t3903-stash.sh
--- 2/t/t3903-stash.sh
+++ b/t/t3903-stash.sh
@@@ -37,21 -37,17 +37,27 @@@ test_expect_success 'parents of stash' 
        test_cmp output expect
  '
  
 -test_expect_success 'apply needs clean working directory' '
 -      echo 4 > other-file &&
+ test_expect_success 'applying bogus stash does nothing' '
+       test_must_fail git stash apply stash@{1} &&
+       echo 1 >expect &&
+       test_cmp expect file
+ '
+ 
 +test_expect_success 'apply does not need clean working directory' '
 +      echo 4 >other-file &&
        git add other-file &&
 -      echo 5 > other-file &&
 -      test_must_fail git stash apply
 +      echo 5 >other-file &&
 +      git stash apply &&
 +      echo 3 >expect &&
 +      test_cmp expect file
 +'
 +
 +test_expect_success 'apply does not clobber working directory changes' '
 +      git reset --hard &&
 +      echo 4 >file &&
 +      test_must_fail git stash apply &&
 +      echo 4 >expect &&
 +      test_cmp expect file
  '
  
  test_expect_success 'apply stashed changes' '