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, 4 insertions, 4 deletions

diff --git a/src/search.c b/src/search.c
index 11f51d87a7d..a7ea3634579 100644
--- a/src/search.c
+++ b/src/search.c
@@ -2064,8 +2064,8 @@ set_search_regs (ptrdiff_t beg_byte, ptrdiff_t nbytes)
      the match position.  */
   if (search_regs.num_regs == 0)
     {
-      search_regs.start = (regoff_t *) xmalloc (2 * sizeof (regoff_t));
-      search_regs.end = (regoff_t *) xmalloc (2 * sizeof (regoff_t));
+      search_regs.start = xmalloc (2 * sizeof (regoff_t));
+      search_regs.end = xmalloc (2 * sizeof (regoff_t));
       search_regs.num_regs = 2;
     }
 
@@ -2500,7 +2500,7 @@ since only regular expressions have distinguished subexpressions.  */)
       substed_alloc_size = ((STRING_BYTES_BOUND - 100) / 2 < length
 			    ? STRING_BYTES_BOUND
 			    : length * 2 + 100);
-      substed = (unsigned char *) xmalloc (substed_alloc_size);
+      substed = xmalloc (substed_alloc_size);
       substed_len = 0;
 
       /* Go thru NEWTEXT, producing the actual text to insert in
@@ -3040,7 +3040,7 @@ syms_of_search (void)
   for (i = 0; i < REGEXP_CACHE_SIZE; ++i)
     {
       searchbufs[i].buf.allocated = 100;
-      searchbufs[i].buf.buffer = (unsigned char *) xmalloc (100);
+      searchbufs[i].buf.buffer = xmalloc (100);
       searchbufs[i].buf.fastmap = searchbufs[i].fastmap;
       searchbufs[i].regexp = Qnil;
       searchbufs[i].whitespace_regexp = Qnil;