refactor: add xmemcpyz() and use it in place of some xstrlcpy() (#28422)

Problem:  Using xstrlcpy() when the exact length of the string to be
          copied is known is not ideal because it requires adding 1 to
          the length and an unnecessary strlen().
Solution: Add xmemcpyz() and use it in place of such xstrlcpy() calls.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/nvim/runtime.c b/src/nvim/runtime.c
index dd9f9370f3..bfe9bb565f 100644
--- a/src/nvim/runtime.c
+++ b/src/nvim/runtime.c
@@ -1628,14 +1628,14 @@ static inline char *add_dir(char *dest, const char *const dir, const size_t dir_
     const char *appname = get_appname();
     size_t appname_len = strlen(appname);
     assert(appname_len < (IOSIZE - sizeof("-data")));
-    xstrlcpy(IObuff, appname, appname_len + 1);
+    xmemcpyz(IObuff, appname, appname_len);
 #if defined(MSWIN)
     if (type == kXDGDataHome || type == kXDGStateHome) {
       xstrlcat(IObuff, "-data", IOSIZE);
       appname_len += 5;
     }
 #endif
-    xstrlcpy(dest, IObuff, appname_len + 1);
+    xmemcpyz(dest, IObuff, appname_len);
     dest += appname_len;
     if (suf1 != NULL) {
       *dest++ = PATHSEP;