9base: fix build and provide distfile

Signed-off-by: Jürgen Buchmüller <pullmoll@t-online.de>

srcpkgs/9base/patches/yydebug.patch

@@ -0,0 +1,11 @@
+--- lib9/main.c	2018-08-17 19:38:18.000000000 +0200
++++ lib9/main.c	2018-08-17 19:43:21.042771643 +0200
+@@ -4,6 +4,8 @@
+ 
+ extern void p9main(int, char**);
+ 
++int yydebug = 0;
++
+ int
+ main(int argc, char **argv)
+ {

srcpkgs/9base/template

@@ -10,10 +10,10 @@ short_desc="Revived minimalist port of Plan 9 userland to Unix"
 maintainer='Tai Chi Minh Ralph Eastwood <tcmreastwood@gmail.com>'
 license="custom"
 homepage="http://git.suckless.org/9base"
-distfiles="http://git.suckless.org/9base/snapshot/9base-${_githash}.tar.bz2"
+distfiles="https://repo.voidlinux.de/distfiles/9base-${_githash}.tar.bz2"
 provides="plan9port-20160418_4"
 conflicts="plan9port"
-checksum=2a7d31a11cb68cd75a7720141cea26f053421064e2230e206c227efbe343d2d8
+checksum=57640696d65a8acbaca5417f1db1dea5ebbc694e8bed0d4ee8a3229f4800dddd
 wrksrc="9base-${_githash}"
 
 pre_build() {