CLSA-2022-1657182377 Fixed CVEs in vim: CVE-2022-2129, CVE-2022-2125, CVE-2022-1720, CVE-2022-2124, CVE-2022-2126

CVE-2022-2125: add checking for NUL to avoid running over the end of line - CVE-2022-1720: do not include the NUL in the length to avoid reading past end of line with "gf" in Visual block mode - CVE-2022-2124: add checking for NUL to avoid running over the end of line - CVE-2022-2129: disallow...