[ruby/uri] String literals are frozen now

https://github.com/ruby/uri/commit/0b6ad60af6

lib/uri/rfc3986_parser.rb

@@ -83,9 +83,9 @@ module URI
       uri.ascii_only? or
         raise InvalidURIError, "URI must be ascii only #{uri.dump}"
       if m = RFC3986_URI.match(uri)
-        query = m["query".freeze]
+        query = m["query"]
-        scheme = m["scheme".freeze]
+        scheme = m["scheme"]
-        opaque = m["path-rootless".freeze]
+        opaque = m["path-rootless"]
         if opaque
           opaque << "?#{query}" if query
           [ scheme,
@@ -96,35 +96,35 @@ module URI
             nil, # path
             opaque,
             nil, # query
-            m["fragment".freeze]
+            m["fragment"]
           ]
         else # normal
           [ scheme,
-            m["userinfo".freeze],
+            m["userinfo"],
-            m["host".freeze],
+            m["host"],
-            m["port".freeze],
+            m["port"],
             nil, # registry
-            (m["path-abempty".freeze] ||
+            (m["path-abempty"] ||
-             m["path-absolute".freeze] ||
+             m["path-absolute"] ||
-             m["path-empty".freeze]),
+             m["path-empty"]),
             nil, # opaque
             query,
-            m["fragment".freeze]
+            m["fragment"]
           ]
         end
       elsif m = RFC3986_relative_ref.match(uri)
         [ nil, # scheme
-          m["userinfo".freeze],
+          m["userinfo"],
-          m["host".freeze],
+          m["host"],
-          m["port".freeze],
+          m["port"],
           nil, # registry,
-          (m["path-abempty".freeze] ||
+          (m["path-abempty"] ||
-           m["path-absolute".freeze] ||
+           m["path-absolute"] ||
-           m["path-noscheme".freeze] ||
+           m["path-noscheme"] ||
-           m["path-empty".freeze]),
+           m["path-empty"]),
           nil, # opaque
-          m["query".freeze],
+          m["query"],
-          m["fragment".freeze]
+          m["fragment"]
         ]
       else
         raise InvalidURIError, "bad URI(is not URI?): #{uri.inspect}"