Handle cases when std::optional does not contain a value

src/video_core/renderer_opengl/gl_rasterizer_cache.cpp

@@ -948,6 +948,7 @@ Surface FindMatch(const SurfaceCache& surface_cache, const SurfaceParams& params
                 return std::make_pair(surface->CanSubRect(params), surface->GetInterval());
             });
             IsMatch_Helper(std::integral_constant<MatchFlags, MatchFlags::Copy>{}, [&] {
+                ASSERT(validate_interval);
                 auto copy_interval =
                     params.FromInterval(*validate_interval).GetCopyableInterval(surface);
                 bool matched = boost::icl::length(copy_interval & *validate_interval) != 0 &&

src/video_core/shader/shader_jit_x64_compiler.cpp

@@ -600,6 +600,7 @@ void JitShader::Compile_BREAKC(Instruction instr) {
     Compile_Assert(looping, "BREAKC must be inside a LOOP");
     if (looping) {
         Compile_EvaluateCondition(instr);
+        ASSERT(loop_break_label);
         jnz(*loop_break_label);
     }
 }