Llava functions compiled as extern "C" throw exceptions

[skoulik]

Basically this:
llama.cpp\examples\llava\clip.cpp(1277,13): warning : 'clip_model_load' has a non-throwing exception specification but can still throw [-Wexceptions]
llama.cpp\examples\llava\clip.cpp(2075,5): warning : 'clip_n_mmproj_embd' has a non-throwing exception specification but can still throw [-Wexceptions]

As these are library exported functions and wrapped in extern "C", they should not allow exceptions to cross the boundary. C language has no idea what to do with them.

Compiled with clang-cl in windows.