tmux: put socket in $PREFIX/var/run instead of $TMPDIR

See https://github.com/termux/termux-packages/issues/4206

packages/tmux/build.sh

@@ -4,7 +4,7 @@ TERMUX_PKG_LICENSE="BSD"
 # Link against libandroid-support for wcwidth(), see https://github.com/termux/termux-packages/issues/224
 TERMUX_PKG_DEPENDS="ncurses, libevent, libandroid-support, libandroid-glob"
 TERMUX_PKG_VERSION=2.9a
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
 TERMUX_PKG_SRCURL=https://github.com/tmux/tmux/releases/download/${TERMUX_PKG_VERSION}/tmux-${TERMUX_PKG_VERSION}.tar.gz
 TERMUX_PKG_SHA256=839d167a4517a6bffa6b6074e89a9a8630547b2dea2086f1fad15af12ab23b25
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--disable-static"

packages/tmux/socket-path.patch

@@ -0,0 +1,11 @@
+--- ../tmux.c.orig	2019-08-24 20:23:15.576000965 +0200
++++ ./tmux.c	2019-08-24 22:11:56.316981911 +0200
+@@ -121,7 +121,7 @@
+ 	if ((s = getenv("TMUX_TMPDIR")) != NULL && *s != '\0')
+ 		xasprintf(&base, "%s/tmux-%ld", s, (long)uid);
+ 	else
+-		xasprintf(&base, "%s/tmux-%ld", _PATH_TMP, (long)uid);
++		xasprintf(&base, "%s/tmux-%ld", "@TERMUX_PREFIX@/var/run", (long)uid);
+ 	if (realpath(base, resolved) == NULL &&
+ 	    strlcpy(resolved, base, sizeof resolved) >= sizeof resolved) {
+ 		errno = ERANGE;