git: skip Rust bits in i686 builds

There is no i686 Rust we could use, therefore we have to exclude the
Rust bits from the build.

One of the next Git versions will make the Rust bits mandatory, at which
point we will have to stop building mingw-w64-i686-git.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

mingw-w64-git/PKGBUILD

@@ -83,6 +83,12 @@ STRIP=
 STRIP_OPTS=
 LDFLAGS=
 
+if test i686 = "$CARCH"
+then
+  # There is no i686 Rust we can use
+  export NO_RUST=ThatsRight
+fi
+
 if test -z "$NO_RUST"
 then
   makedepends+=("${MINGW_PACKAGE_PREFIX}-rust")