Docs: minor edits to code comments

source/blender/windowmanager/intern/wm_files.c

@@ -469,6 +469,8 @@ static void wm_file_read_post(bContext *C, bool is_startup_file)
 		BPY_python_reset(C);
 		addons_loaded = true;
 	}
+#else
+	UNUSED_VARS(is_startup_file);
 #endif  /* WITH_PYTHON */
 
 	WM_operatortype_last_properties_clear_all();

source/blender/windowmanager/intern/wm_init_exit.c

@@ -428,8 +428,9 @@ static void wait_for_console_key(void)
 }
 #endif
 
-/* called in creator.c even... tsk, split this! */
-/* note, doesnt run exit() call WM_exit() for that */
+/**
+ * \note doesn't run exit() call #WM_exit() for that.
+ */
 void WM_exit_ext(bContext *C, const bool do_python)
 {
 	wmWindowManager *wm = C ? CTX_wm_manager(C) : NULL;

source/creator/creator.c

@@ -1785,11 +1785,11 @@ char **environ = NULL;
 #endif
 
 /**
- * Blender's main function responsabilities are:
+ * Blender's main function responsibilities are:
  * - setup subsystems.
  * - handle arguments.
- * - run WM_main() event loop,
- *   or exit when running in background mode.
+ * - run #WM_main() event loop,
+ *   or exit immediately when running in background mode.
  */
 int main(
         int argc,
@@ -2071,7 +2071,7 @@ int main(
 #endif
 
 	if (G.background) {
-		/* actually incorrect, but works for now (ton) */
+		/* Using window-manager API in background mode is a bit odd, but works fine. */
 		WM_exit(C);
 	}
 	else {