system/john: Change i486 to i586

system/john/john.SlackBuild

@@ -23,7 +23,7 @@ PKGTYPE=${PKGTYPE:-tgz}
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
-    i?86) ARCH=i486 ;;
+    i?86) ARCH=i586 ;;
     arm*) ARCH=arm ;;
        *) ARCH=$( uname -m ) ;;
   esac
@@ -41,7 +41,7 @@ TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
 OUTPUT=${OUTPUT:-/tmp}
 
-if [ "$ARCH" = "i486" ]; then
+if [ "$ARCH" = "i586" ]; then
   if grep -q ^flags.*avx /proc/cpuinfo; then
     TARGET=linux-x86-avx
   elif grep -q ^flags.*sse2 /proc/cpuinfo; then