Silence warnings in tests.

```
activerecord/test/cases/adapters/postgresql/range_test.rb:159: warning: (...) interpreted as grouped expression
activerecord/test/cases/finder_test.rb:38: warning: shadowing outer local variable - e
activerecord/test/cases/finder_test.rb:43: warning: shadowing outer local variable - e
```

1 files changed, 2 insertions, 2 deletions

diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb
index 0f52f2c0fc..bd77c412f6 100644
--- a/activerecord/test/cases/finder_test.rb
+++ b/activerecord/test/cases/finder_test.rb
@@ -34,10 +34,10 @@ class FinderTest < ActiveRecord::TestCase
   end
 
   def test_find_with_proc_parameter_and_block
-    e = assert_raises(RuntimeError) do
+    exception = assert_raises(RuntimeError) do
       Topic.all.find(-> { raise "should happen" }) { |e| e.title == "non-existing-title" }
     end
-    assert_equal "should happen", e.message
+    assert_equal "should happen", exception.message
 
     assert_nothing_raised(RuntimeError) do
       Topic.all.find(-> { raise "should not happen" }) { |e| e.title == topics(:first).title }