fs_cli: comply with -Wwrite-strings

diff --git a/libs/esl/fs_cli.c b/libs/esl/fs_cli.c
index 775c5af11f7f2dea43f570db0f1bc9d15fc8c9ef..3d66a17adfbb8916c6d225e32507f802a67a83d5 100644 (file)
--- a/libs/esl/fs_cli.c
+++ b/libs/esl/fs_cli.c
@@ -575,7 +575,7 @@ static int stdout_writable(void)
 #endif
 }
 
-static int write_str(char *s) {
+static int write_str(const char *s) {
        int n, left = strlen(s);
        while (1) {
                n = write(STDOUT_FILENO, s, left);