Get rid of NULL checks for free

The useless "if (foo) free(foo)" idiom is all over the place, just
get rid of it finally...

1 files changed, 7 insertions, 13 deletions

diff --git a/libass/ass_bitmap.c b/libass/ass_bitmap.c
index 9211a7c..522bce7 100644
--- a/libass/ass_bitmap.c
+++ b/libass/ass_bitmap.c
@@ -113,8 +113,7 @@ static void resize_tmp(ASS_SynthPriv *priv, int w, int h)
         priv->tmp_w *= 2;
     while (priv->tmp_h < h)
         priv->tmp_h *= 2;
-    if (priv->tmp)
-        free(priv->tmp);
+    free(priv->tmp);
     priv->tmp = malloc((priv->tmp_w + 1) * priv->tmp_h * sizeof(short));
 }
 
@@ -127,12 +126,9 @@ ASS_SynthPriv *ass_synth_init(double radius)
 
 void ass_synth_done(ASS_SynthPriv *priv)
 {
-    if (priv->tmp)
-        free(priv->tmp);
-    if (priv->g)
-        free(priv->g);
-    if (priv->gt2)
-        free(priv->gt2);
+    free(priv->tmp);
+    free(priv->g);
+    free(priv->gt2);
     free(priv);
 }
 
@@ -149,11 +145,9 @@ static Bitmap *alloc_bitmap(int w, int h)
 
 void ass_free_bitmap(Bitmap *bm)
 {
-    if (bm) {
-        if (bm->buffer)
-            free(bm->buffer);
-        free(bm);
-    }
+    if (bm)
+        free(bm->buffer);
+    free(bm);
 }
 
 static Bitmap *copy_bitmap(const Bitmap *src)