run_unittests.sh: fix Python DeprecationWarning
Fix the following Python error:
D:\a\1\s\run_unittests.py:6654: DeprecationWarning: invalid escape sequence \
self.assertEqual(libhello_nolib.get_pkgconfig_variable(escaped_var, {}), hello world)
Use a raw string literal.
@@ -6651,7 +6651,7 @@ class LinuxlikeTests(BasePlatformTests):
self.assertEqual(libhello_nolib.get_compile_args(), [])
self.assertEqual(libhello_nolib.get_pkgconfig_variable('foo', {}), 'bar')
self.assertEqual(libhello_nolib.get_pkgconfig_variable('prefix', {}), self.prefix)
- self.assertEqual(libhello_nolib.get_pkgconfig_variable('escaped_var', {}), 'hello\ world')
+ self.assertEqual(libhello_nolib.get_pkgconfig_variable('escaped_var', {}), r'hello\ world')
self.assertEqual(libhello_nolib.get_pkgconfig_variable('unescaped_var', {}), 'hello world')
cc = env.detect_c_compiler(MachineChoice.HOST)
