Cleanup: spelling in comments, C++ style comments for disabled code

Also ensure space at end of comment.

source/blender/python/intern/bpy_operator.c

@@ -401,7 +401,7 @@ static PyObject *pyop_as_string(PyObject *UNUSED(self), PyObject *args)
     return NULL;
   }
 
-  /* WM_operator_properties_create(&ptr, opname); */
+  // WM_operator_properties_create(&ptr, opname);
   /* Save another lookup */
   RNA_pointer_create(NULL, ot->srna, NULL, &ptr);
 

source/blender/python/intern/bpy_rna_array.c

@@ -126,7 +126,7 @@ static int validate_array_type(PyObject *seq,
         ok = 0;
       }
       else if ((item_seq_size = PySequence_Size(item)) == -1) {
-        /* BLI_snprintf(error_str, error_str_size, "expected a sequence of %s", item_type_str); */
+        // BLI_snprintf(error_str, error_str_size, "expected a sequence of %s", item_type_str);
         PyErr_Format(PyExc_TypeError,
                      "%s expected a sequence of %s, not %s",
                      error_prefix,