Suppress "assigned but unused variable" warnings

mame · nurse · commit aeda3a7f036a · 2020-03-27T14:57:47.000+09:00
(cherry picked from commit 65dd50f)
diff --git a/test/ruby/test_pattern_matching.rb b/test/ruby/test_pattern_matching.rb
@@ -1047,6 +1047,7 @@ def test_hash_pattern
       in {a: 1,}
         false
       in {a:,}
+        _a = a
         true
       end
     end
@@ -1061,6 +1062,7 @@ def test_hash_pattern
         false
       in {a:
       }
+        _a = a
         true
       end
     end
