Remove useless checks for NULL before freeing

This patch has been generated by the following Coccinelle semantic patch:
// Remove useless checks for NULL before freeing
//
// free (NULL) is a no-op, so there is no need to avoid it

@@
expression E;
@@
+ free (E);
+ E = NULL;
- if (unlikely (E != NULL)) {
-   free(E);
(
-   E = NULL;
|
-   E = 0;
)
   ...
- }

@@
expression E;
@@
+ free (E);
- if (unlikely (E != NULL)) {
-   free (E);
- }

1 files changed, 1 insertions, 2 deletions

diff --git a/src/cairo-gstate.c b/src/cairo-gstate.c
index 11a7b517..1d59fc54 100644
--- a/src/cairo-gstate.c
+++ b/src/cairo-gstate.c
@@ -517,8 +517,7 @@ _cairo_gstate_set_dash (cairo_gstate_t *gstate, const double *dash, int num_dash
     unsigned int i;
     double dash_total;
 
-    if (gstate->stroke_style.dash)
-	free (gstate->stroke_style.dash);
+    free (gstate->stroke_style.dash);
 
     gstate->stroke_style.num_dashes = num_dashes;