[Paddle-TRT] potential memory leak

[jeng1220]

IPlugin*::initialize and IPlugin*::terminate should be always implemented as a pair. Also, resources acquired (e.g. malloc, new *, cuadMalloc*, *Create*, etc) in IPlugin*::initialize should be released in IPlugin*::terminate. Otherwise, it causes memory leak.

I fix a plugin as example, see #24106. Following plugins have the same bug at least:

• InstanceNormPlugin
• PReluPlugin
• SkipLayerNormPluginDynamic

Read https://docs.nvidia.com/deeplearning/sdk/tensorrt-developer-guide/index.html#ipluginext to know more.

[jeng1220]

@NHZlX
This is a serious bug. Please assign someone to fix it.

[NHZlX]

新版本lib 给到后会进行解决。

[paddle-bot-old]

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