correct the patch from cjacker huang for iphone compiling

svn:r12953

configure.in

@@ -31,7 +31,7 @@ AC_ARG_ENABLE(iphone,
  AS_HELP_STRING(--enable-iphone, compile with iPhone support),
  [if test x$enableval = xyes ; then
    tor_cv_iphone=true
-   CFLAGS="$CFLAGS -D__DARWIN_UINX03 -DIPHONE"
+   CFLAGS="$CFLAGS -D__DARWIN_UNIX03 -DIPHONE"
   fi])
 
 AC_ARG_ENABLE(cell-pool,