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	RTP documentation states that you can pass NULL as the module, so make sure that's really the case.
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@247125 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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		| @@ -1200,6 +1200,10 @@ int ast_loader_unregister(int (*v)(void)) | ||||
|  | ||||
| struct ast_module *ast_module_ref(struct ast_module *mod) | ||||
| { | ||||
| 	if (!mod) { | ||||
| 		return NULL; | ||||
| 	} | ||||
|  | ||||
| 	ast_atomic_fetchadd_int(&mod->usecount, +1); | ||||
| 	ast_update_use_count(); | ||||
|  | ||||
| @@ -1208,6 +1212,10 @@ struct ast_module *ast_module_ref(struct ast_module *mod) | ||||
|  | ||||
| void ast_module_unref(struct ast_module *mod) | ||||
| { | ||||
| 	if (!mod) { | ||||
| 		return; | ||||
| 	} | ||||
|  | ||||
| 	ast_atomic_fetchadd_int(&mod->usecount, -1); | ||||
| 	ast_update_use_count(); | ||||
| } | ||||
|   | ||||
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