virt-login-shell: correctly calculate string length

virLoginShellGetShellArgv was not dereferencing the pointer
to the string list containing the shell parameters from the
config file, thus setting some random number as shargvlen.

Signed-off-by: Ján Tomko <[email protected]>
Fixes: 740e4d7
Reviewed-by: Martin Kletzander <[email protected]>

Author: janotomko

tools/virt-login-shell-helper.c

@@ -104,7 +104,7 @@ static int virLoginShellGetShellArgv(virConfPtr conf,
         (*shargv)[0] = g_strdup("/bin/sh");
         *shargvlen = 1;
     } else {
-        *shargvlen = virStringListLength((const char *const *)shargv);
+        *shargvlen = virStringListLength((const char *const *)*shargv);
     }
     return 0;
 }