NULL-check buffers *before* extracting their fields
NULL-check buffers *before* extracting their fields


Former-commit-id: 76a72f1f63107ea3531d5700e95dd106861a0651
Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide