Cleanup xmalloc.

* admin/coccinelle/xzalloc.cocci: Semantic patch to convert
calls to xmalloc with following memset to xzalloc.
* src/lisp.h (xzalloc): New prototype.  Omit needless casts.
* src/alloc.c (xzalloc): New function.  Omit needless casts.
* src/charset.c: Omit needless casts.  Convert all calls to
malloc with following memset to xzalloc.
* src/dispnew.c: Likewise.
* src/fringe.c: Likewise.
* src/image.c: Likewise.
* src/sound.c: Likewise.
* src/term.c: Likewise.
* src/w32fns.c: Likewise.
* src/w32font.c: Likewise.
* src/w32term.c: Likewise.
* src/xfaces.c: Likewise.
* src/xfns.c: Likewise.
* src/xterm.c: Likewise.
* src/atimer.c: Omit needless casts.
* src/buffer.c: Likewise.
* src/callproc.c: Likewise.
* src/ccl.c: Likewise.
* src/coding.c: Likewise.
* src/composite.c: Likewise.
* src/doc.c: Likewise.
* src/doprnt.c: Likewise.
* src/editfns.c: Likewise.
* src/emacs.c: Likewise.
* src/eval.c: Likewise.
* src/filelock.c: Likewise.
* src/fns.c: Likewise.
* src/gtkutil.c: Likewise.
* src/keyboard.c: Likewise.
* src/lisp.h: Likewise.
* src/lread.c: Likewise.
* src/minibuf.c: Likewise.
* src/msdos.c: Likewise.
* src/print.c: Likewise.
* src/process.c: Likewise.
* src/region-cache.c: Likewise.
* src/search.c: Likewise.
* src/sysdep.c: Likewise.
* src/termcap.c: Likewise.
* src/terminal.c: Likewise.
* src/tparam.c: Likewise.
* src/w16select.c: Likewise.
* src/w32.c: Likewise.
* src/w32reg.c: Likewise.
* src/w32select.c: Likewise.
* src/w32uniscribe.c: Likewise.
* src/widget.c: Likewise.
* src/xdisp.c: Likewise.
* src/xmenu.c: Likewise.
* src/xrdb.c: Likewise.
* src/xselect.c: Likewise.

1 files changed, 5 insertions, 8 deletions

diff --git a/src/xfaces.c b/src/xfaces.c
index 021d40559e5..28ef5e6cd13 100644
--- a/src/xfaces.c
+++ b/src/xfaces.c
@@ -4148,8 +4148,7 @@ lface_same_font_attributes_p (Lisp_Object *lface1, Lisp_Object *lface2)
 static struct face *
 make_realized_face (Lisp_Object *attr)
 {
-  struct face *face = (struct face *) xmalloc (sizeof *face);
-  memset (face, 0, sizeof *face);
+  struct face *face = xzalloc (sizeof *face);
   face->ascii_face = face;
   memcpy (face->lface, attr, sizeof face->lface);
   return face;
@@ -4294,13 +4293,11 @@ make_face_cache (struct frame *f)
   struct face_cache *c;
   int size;
 
-  c = (struct face_cache *) xmalloc (sizeof *c);
-  memset (c, 0, sizeof *c);
+  c = xzalloc (sizeof *c);
   size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets;
-  c->buckets = (struct face **) xmalloc (size);
-  memset (c->buckets, 0, size);
+  c->buckets = xzalloc (size);
   c->size = 50;
-  c->faces_by_id = (struct face **) xmalloc (c->size * sizeof *c->faces_by_id);
+  c->faces_by_id = xmalloc (c->size * sizeof *c->faces_by_id);
   c->f = f;
   c->menu_face_changed_p = menu_face_changed_default;
   return c;
@@ -5582,7 +5579,7 @@ realize_non_ascii_face (struct frame *f, Lisp_Object font_object,
   struct face_cache *cache = FRAME_FACE_CACHE (f);
   struct face *face;
 
-  face = (struct face *) xmalloc (sizeof *face);
+  face = xmalloc (sizeof *face);
   *face = *base_face;
   face->gc = 0;
   face->extra = NULL;