Do not store config parser object in Wrap object. Closes: #7920.

mesonbuild/wrap/wrap.py

diff --git a/mesonbuild/wrap/wrap.py b/mesonbuild/wrap/wrap.py
index bb153c5..e48dde9 100644
--- a/mesonbuild/wrap/wrap.py
+++ b/mesonbuild/wrap/wrap.py
@@ -114,11 +114,11 @@
 
     def parse_wrap(self) -> None:
         try:
-            self.config = configparser.ConfigParser(interpolation=None)
-            self.config.read(self.filename)
+            config = configparser.ConfigParser(interpolation=None)
+            config.read(self.filename)
         except configparser.Error as e:
             raise WrapException('Failed to parse {}: {}'.format(self.basename, str(e)))
-        self.parse_wrap_section()
+        self.parse_wrap_section(config)
         if self.type == 'redirect':
             # [wrap-redirect] have a `filename` value pointing to the real wrap
             # file we should parse instead. It must be relative to the current
@@ -140,21 +140,21 @@
             self.filename = str(fname)
             self.parse_wrap()
             return
-        self.parse_provide_section()
+        self.parse_provide_section(config)
 
-    def parse_wrap_section(self) -> None:
-        if len(self.config.sections()) < 1:
+    def parse_wrap_section(self, config) -> None:
+        if len(config.sections()) < 1:
             raise WrapException('Missing sections in {}'.format(self.basename))
-        self.wrap_section = self.config.sections()[0]
+        self.wrap_section = config.sections()[0]
         if not self.wrap_section.startswith('wrap-'):
             m = '{!r} is not a valid first section in {}'
             raise WrapException(m.format(self.wrap_section, self.basename))
         self.type = self.wrap_section[5:]
-        self.values = dict(self.config[self.wrap_section])
+        self.values = dict(config[self.wrap_section])
 
-    def parse_provide_section(self) -> None:
-        if self.config.has_section('provide'):
-            for k, v in self.config['provide'].items():
+    def parse_provide_section(self, config) -> None:
+        if config.has_section('provide'):
+            for k, v in config['provide'].items():
                 if k == 'dependency_names':
                     # A comma separated list of dependency names that does not
                     # need a variable name