busybox: Fix 'diff' when for pipes/stdin

packages/busybox/build.sh

@@ -2,7 +2,7 @@ TERMUX_PKG_HOMEPAGE=http://www.busybox.net/
 TERMUX_PKG_DESCRIPTION="Tiny versions of many common UNIX utilities into a single small executable"
 TERMUX_PKG_ESSENTIAL=yes
 TERMUX_PKG_VERSION=1.24.1
-TERMUX_PKG_BUILD_REVISION=1
+TERMUX_PKG_BUILD_REVISION=2
 TERMUX_PKG_SRCURL=http://www.busybox.net/downloads/busybox-${TERMUX_PKG_VERSION}.tar.bz2
 TERMUX_PKG_BUILD_IN_SRC=yes
 

packages/busybox/editors-diff.c.patch

@@ -0,0 +1,12 @@
+diff -u -r ../busybox-1.24.1/editors/diff.c ./editors/diff.c
+--- ../busybox-1.24.1/editors/diff.c	2015-10-11 09:31:50.000000000 -0400
++++ ./editors/diff.c	2016-02-08 05:23:45.890302334 -0500
+@@ -734,7 +734,7 @@
+ 		 * When we meet non-seekable file, we must make a temp copy.
+ 		 */
+ 		if (lseek(fd, 0, SEEK_SET) == -1 && errno == ESPIPE) {
+-			char name[] = "/tmp/difXXXXXX";
++			char name[] = "@TERMUX_PREFIX@/tmp/difXXXXXX";
+ 			int fd_tmp = xmkstemp(name);
+ 
+ 			unlink(name);