run_unittests: fix undefined variable in error message
In commit some uses of p got
rewritten to compiler.language, but not all. We'd still raise an error
message, but for the wrong thing. o_O
@@ -6417,7 +6417,7 @@ class LinuxlikeTests(BasePlatformTests):
elif compiler.language == 'cpp':
env_flag_name = 'CXXFLAGS'
else:
- raise NotImplementedError('Language {} not defined.'.format(p))
+ raise NotImplementedError('Language {} not defined.'.format(compiler.language))
env = {}
env[env_flag_name] = cmd_std
with self.assertRaises((subprocess.CalledProcessError, mesonbuild.mesonlib.EnvironmentException),
