drw.c: Avoid potential memory leak in drw_cur_create()

If drw was NULL, memory was still allocated for cur.

diff --git a/drw.c b/drw.c
index a2dfe6c601067d42b29d9803473a5167641f65a2..15797ceb67ae85edf6140eb7f60dae9f395c90c2 100644 (file)
--- a/drw.c
+++ b/drw.c
@@ -396,9 +396,9 @@ drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w,
 
 Cur *
 drw_cur_create(Drw *drw, int shape) {
-       Cur *cur = (Cur *)calloc(1, sizeof(Cur));
+       Cur *cur;
 
-       if(!drw || !cur)
+       if(!drw || !(cur = (Cur *)calloc(1, sizeof(Cur))))
                return NULL;
        cur->cursor = XCreateFontCursor(drw->dpy, shape);
        return cur;