typo

Originally committed as revision 6858 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -358,7 +358,7 @@ case "$arch" in
     arch="x86_32"
   ;;
   x86_64|amd64)
-    arch="x86"_32
+    arch="x86_32"
     canon_arch="`$cc -dumpmachine | sed -e 's,\([^-]*\)-.*,\1,'`"
     if [ x"$canon_arch" = x"x86_64" -o x"$canon_arch" = x"amd64" ]; then
       if [ -z "`echo $CFLAGS | grep -- -m32`"  ]; then