[hackers] [st] clipcopy: no need to check for free(NULL), set to NULL after free || Hiltjo Posthuma

[git]

commit 5345db3c9be1a22ca19202035b881b951c2f0f9e
Author:     Hiltjo Posthuma <hil...@codemadness.org>
AuthorDate: Sat Mar 17 13:48:10 2018 +0100
Commit:     Hiltjo Posthuma <hil...@codemadness.org>
CommitDate: Sat Mar 17 13:48:10 2018 +0100

    clipcopy: no need to check for free(NULL), set to NULL after free

diff --git a/x.c b/x.c
index d0b26ac..12bc86b 100644
--- a/x.c
+++ b/x.c
@@ -245,8 +245,8 @@ clipcopy(const Arg *dummy)
 {
        Atom clipboard;
 
-       if (xsel.clipboard != NULL)
-               free(xsel.clipboard);
+       free(xsel.clipboard);
+       xsel.clipboard = NULL;
 
        if (xsel.primary != NULL) {
                xsel.clipboard = xstrdup(xsel.primary);