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, 2 insertions, 2 deletions

diff --git a/src/w16select.c b/src/w16select.c
index 270118358b4..2026de7421d 100644
--- a/src/w16select.c
+++ b/src/w16select.c
@@ -493,7 +493,7 @@ DEFUN ("w16-set-clipboard-data", Fw16_set_clipboard_data, Sw16_set_clipboard_dat
 
       setup_coding_system (Fcheck_coding_system (coding_system), &coding);
       coding.dst_bytes = nbytes * 4;
-      coding.destination = (unsigned char *) xmalloc (coding.dst_bytes);
+      coding.destination = xmalloc (coding.dst_bytes);
       Vnext_selection_coding_system = Qnil;
       coding.mode |= CODING_MODE_LAST_BLOCK;
       dst = coding.destination;
@@ -572,7 +572,7 @@ DEFUN ("w16-get-clipboard-data", Fw16_get_clipboard_data, Sw16_get_clipboard_dat
     goto unblock;
 
   if ((data_size = get_clipboard_data_size (CF_OEMTEXT)) == 0 ||
-      (htext = (unsigned char *)xmalloc (data_size)) == 0)
+      (htext = xmalloc (data_size)) == 0)
     goto closeclip;
 
   /* need to know final size after '\r' chars are removed because