Hello,

This is my first time sending a patch here, please let me know if I got the process wrong.

I was building a minimal libav for WebAssembly with Emscripten, with only H264 and AAC. It fails unless I also enable other configs that would increase code size.
Seems like someone forgot to guard a call with a config macro. This patch adds it, just like the other occurrences in this same file. Everything works fine after that.

Thanks!