Minor update in example openocd-libswd bridge that produced warnin/error on some compilers.
Minor update in example openocd-libswd bridge that produced warnin/error on some compilers.

ongjohn/LibSWD,shangdawei/LibSWD,cedar-renjun/LibSWD,cedar-renjun/LibSWD,ongjohn/LibSWD,shangdawei/LibSWD,ongjohn/LibSWD,cedar-renjun/LibSWD,shangdawei/LibSWD