Update mesonbuild/backend/vs2010backend.py

Co-authored-by: Charles Brunet <[email protected]>

Author: 2 people

mesonbuild/backend/vs2010backend.py

@@ -628,7 +628,7 @@ def create_basic_project(self, target_name, *,
 
         multi_config_buildtype_list = coredata.get_genvs_default_buildtype_list() if self.gen_lite else [self.buildtype]
         if "debug" not in multi_config_buildtype_list:
-            multi_config_buildtype_list += ["debug"]
+            multi_config_buildtype_list.append('debug')
         for buildtype in multi_config_buildtype_list:
             prjconf = ET.SubElement(confitems, 'ProjectConfiguration',
                                     {'Include': buildtype + '|' + target_platform})