Memory allocation related bug fixed

c/build/win32/.vs/dxl_x86_c/v14/.suo

c/build/win32/output/dxl_x86_c.dll

c/build/win32/output/dxl_x86_c.lib

c/build/win64/output/dxl_x64_c.dll

c/build/win64/output/dxl_x64_c.lib

c/example/protocol1.0/bulk_read/bulk_read.c

c/example/protocol1.0/bulk_read/win32/.vs/bulk_read/v14/.suo

c/example/protocol1.0/multi_port/multi_port.c

...mple/protocol1.0/multi_port/win32/.vs/multi_port/v14/.suo

...mple/protocol1.0/multi_port/win64/.vs/multi_port/v14/.suo

c/example/protocol1.0/ping/ping.c

c/example/protocol1.0/ping/win32/.vs/ping/v14/.suo

c/example/protocol1.0/ping/win64/.vs/ping/v14/.suo

c/example/protocol1.0/read_write/read_write.c

...mple/protocol1.0/read_write/win32/.vs/read_write/v14/.suo

...mple/protocol1.0/read_write/win64/.vs/read_write/v14/.suo

c/example/protocol1.0/reset/reset.c

c/example/protocol1.0/reset/win32/.vs/reset/v14/.suo

c/example/protocol1.0/reset/win64/.vs/reset/v14/.suo

c/example/protocol1.0/sync_write/sync_write.c