*: introduce and use xmkstemp. -65 bytes.

Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

editors/diff.c

@@ -685,9 +685,8 @@ static int diffreg(char *file[2])
 		 */
 		if (lseek(fd, 0, SEEK_SET) == -1 && errno == ESPIPE) {
 			char name[] = "/tmp/difXXXXXX";
-			int fd_tmp = mkstemp(name);
-			if (fd_tmp < 0)
-				bb_perror_msg_and_die("mkstemp");
+			int fd_tmp = xmkstemp(name);
+
 			unlink(name);
 			if (bb_copyfd_eof(fd, fd_tmp) < 0)
 				xfunc_die();

editors/patch.c

@@ -200,8 +200,7 @@ int copy_tempfile(int fdin, char *name, char **tempname)
 	int fd;
 
 	*tempname = xasprintf("%sXXXXXX", name);
-	fd = mkstemp(*tempname);
-	if(-1 == fd) bb_perror_msg_and_die("no temp file");
+	fd = xmkstemp(*tempname);
 
 	// Set permissions of output file
 	fstat(fdin, &statbuf);

editors/sed.c

@@ -1370,9 +1370,7 @@ int sed_main(int argc UNUSED_PARAM, char **argv)
 			}
 
 			G.outname = xasprintf("%sXXXXXX", argv[i]);
-			nonstdoutfd = mkstemp(G.outname);
-			if (-1 == nonstdoutfd)
-				bb_perror_msg_and_die("can't create temp file %s", G.outname);
+			nonstdoutfd = xmkstemp(G.outname);
 			G.nonstdout = xfdopen_for_write(nonstdoutfd);
 
 			/* Set permissions/owner of output file */