libwebsockets

drivers: spi: avoid leaking uninitialized bits

Before this commit, line 84 read 'u' before it had a value, on 1st for-loop iteration. See comment on line 84 below:

82		for (n = 0; n < 8; n++) {
83			ctx->gpio->set(ctx->clk, inv);
84			u = (u << 1) | !!ctx->gpio->read(ctx->miso); /* <-- u is used uninitialized here */
85			ctx->gpio->set(ctx->mosi, !!(u & 0x80));
86			ctx->gpio->set(ctx->clk, !inv);
87		}