use strcat instead of strncat as using strlen has no benefit

Fixes #2801

1 files changed, 2 insertions, 2 deletions

diff --git a/src/firejail/x11.c b/src/firejail/x11.c
index 3beef3986..857f302e4 100644
--- a/src/firejail/x11.c
+++ b/src/firejail/x11.c
@@ -893,9 +893,9 @@ void x11_start_xpra_new(int argc, char **argv, char *display_str) {
 
         strcpy(start_child,start_child_prefix);
         for(i = 0; (unsigned) i < fpos; i++) {
-                strncat(start_child,firejail_argv[i],strlen(firejail_argv[i]));
+                strcat(start_child,firejail_argv[i]);
                 if((unsigned) i != fpos - 1)
-                        strncat(start_child," ",strlen(" "));
+                        strcat(start_child," ");
         }
 
         server_argv[spos++] = start_child;