Potential null-pointer dereference vulnerability

[HoshinoStranding]

Hi, I have found a potential null-pointer-dereference bug in the project and would like to report it to the maintainers. Can you please help me check it? Thank you for your effort and patience!

At line 549 in file ext/SPIRV-Cross/spirv_cross.hpp, the function Compiler::stream may return NULL. But at line 4906 in file ext/SPIRV-Cross/spirv_hlsl.cpp, the function CompilerHLSL::emit_store calls Compiler::stream and doesn't check the return value before dereferencing it, which may lead to null-pointer-dereference vulnerability. The same risk also exists at line 9341 in file ext/SPIRV-Cross/spirv_msl.cpp.