fix test file

Author: am0o0

ruby/ql/test/query-tests/security/cwe-502/unsafe-deserialization/UnsafeDeserialization.rb

@@ -121,7 +121,7 @@ def route15
   def route16
     yaml_data = params[:key]
     object = Psych.load yaml_data
-    object = Psych.load_file yaml_data2
+    object = Psych.load_file yaml_data
   end
 
   # GOOD
@@ -135,25 +135,25 @@ def route17
   # BAD
   def route18
     yaml_data = params[:key]
-    object = Psych.unsafe_load(plist_data)
-    object = Psych.unsafe_load_file(plist_data)
-    object = Psych.load_stream(plist_data)
-    parse_output = Psych.parse_stream(plist_data)
+    object = Psych.unsafe_load(yaml_data)
+    object = Psych.unsafe_load_file(yaml_data)
+    object = Psych.load_stream(yaml_data)
+    parse_output = Psych.parse_stream(yaml_data)
     object = parse_output.to_ruby
-    object = Psych.parse(plist_data).to_ruby
-    object = Psych.parse_file(plist_data).to_ruby
-    parsed_yaml = Psych.parse_stream(plist_data)
+    object = Psych.parse(yaml_data).to_ruby
+    object = Psych.parse_file(yaml_data).to_ruby
+    parsed_yaml = Psych.parse_stream(yaml_data)
     parsed_yaml.children.each do |child|
       object = child.to_ruby
     end
-    Psych.parse_stream(plist_data)  do |document|
+    Psych.parse_stream(yaml_data)  do |document|
       object = document.to_ruby
     end
     object = parsed_yaml.children.first.to_ruby
     content = parsed_yaml.children[0].children[0].children
     object = parsed_yaml.to_ruby[0]
     object = content.to_ruby[0]
-    object = Psych.parse(plist_data).children[0].to_ruby
+    object = Psych.parse(yaml_data).children[0].to_ruby
   end
 
   # BAD