apt: Fix HTTP/2 compatibility

Thanks its-pointless for finding the issue!

packages/apt/build.sh

@@ -2,7 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://packages.debian.org/apt
 TERMUX_PKG_DESCRIPTION="Front-end for the dpkg package manager"
 TERMUX_PKG_DEPENDS="libcurl, liblzma, dpkg, gpgv, libc++, termux-exec"
 TERMUX_PKG_VERSION=1.4.8
-TERMUX_PKG_REVISION=7
+TERMUX_PKG_REVISION=8
 TERMUX_PKG_SHA256=767ad7d6efb64cde52faececb7d3c0bf49800b9fe06f3a5b0132ab4c01a5b8f8
 TERMUX_PKG_SRCURL=http://ftp.debian.org/debian/pool/main/a/apt/apt_${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="

packages/apt/methods-basehttp.cc.patch

@@ -0,0 +1,25 @@
+diff -u -r ../apt-1.4.8/methods/basehttp.cc ./methods/basehttp.cc
+--- ../apt-1.4.8/methods/basehttp.cc	2017-09-13 16:47:33.000000000 +0000
++++ ./methods/basehttp.cc	2018-12-30 21:42:01.326143988 +0000
+@@ -90,7 +90,12 @@
+       // Evil servers return no version
+       if (Line[4] == '/')
+       {
+-	 int const elements = sscanf(Line.c_str(),"HTTP/%3u.%3u %3u%359[^\n]",&Major,&Minor,&Result,Code);
++	 int elements = sscanf(Line.c_str(),"HTTP/%3u %3u[^\n]",&Major,&Result);
++	 if (elements == 2 && Major == 2) {
++	     Minor = 0;
++	     Code[0] = '\0';
++	 } else {
++	 elements = sscanf(Line.c_str(),"HTTP/%3u.%3u %3u%359[^\n]",&Major,&Minor,&Result,Code);
+ 	 if (elements == 3)
+ 	 {
+ 	    Code[0] = '\0';
+@@ -99,6 +104,7 @@
+ 	 }
+ 	 else if (elements != 4)
+ 	    return _error->Error(_("The HTTP server sent an invalid reply header"));
++	 }
+       }
+       else
+       {