Include zlib.h using #include <>

zlib.h is not a local include file, therefore it should be included
using <> instead of "".
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

block/vmdk.c

@@ -26,7 +26,7 @@
 #include "qemu-common.h"
 #include "block_int.h"
 #include "module.h"
-#include "zlib.h"
+#include <zlib.h>
 
 #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D')
 #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V')