Fix T57113: OBJ material import int conversion

Referenced by issue #57113, OBJ file error

io_scene_obj/import_obj.py

@@ -426,7 +426,7 @@ def create_materials(filepath, relpath,
                         # rgb, filter color, blender has no support for this.
                         pass
                     elif line_id == b'illum':
-                        illum = int(line_split[1])
+                        illum = get_int(line_split[1])
 
                         # inline comments are from the spec, v4.2
                         if illum == 0:
@@ -957,6 +957,12 @@ def get_float_func(filepath):
     return float
 
 
+def get_int(svalue):
+    if b',' in svalue:
+        return int(float(svalue.replace(b',', b'.')))
+    return int(float(svalue))
+
+
 def load(context,
          filepath,
          *,