Seems no special reason for keeping page_array, free it
to avoid memroy leak in Qemu.

Signed-off-by : Zhang xiantao<xiantao.zhang@intel.com> 

diff -r 561df7d9cecc tools/ioemu/vl.c
--- a/tools/ioemu/vl.c	Wed Aug 02 15:09:56 2006 -0600
+++ b/tools/ioemu/vl.c	Thu Aug 03 17:21:47 2006 +0800
@@ -5804,6 +5804,9 @@ int main(int argc, char **argv)
     fprintf(logfile, "shared page at pfn:%lx, mfn: %016lx\n",
             IO_PAGE_START >> PAGE_SHIFT, page_array[0]);
 #endif
+    
+    free(page_array);
+
 #else  /* !CONFIG_DM */
 
 #ifdef CONFIG_SOFTMMU