Fix warning "implicit declaration of function `vasprintf'"

If There is a better fix, plz fixme.

ext/fileinfo/libmagic/print.c

@@ -28,9 +28,8 @@
 /*
  * print.c - debugging printout routines
  */
-
+#define _GNU_SOURCE
 #include "php.h"
-#include "main/snprintf.h"
 
 #include "file.h"
 
@@ -38,6 +37,7 @@
 FILE_RCSID("@(#)$File: print.c,v 1.66 2009/02/03 20:27:51 christos Exp $")
 #endif  /* lint */
 
+#include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
 #include <stdlib.h>

main/snprintf.c

@@ -18,7 +18,7 @@
 
 /* $Id$ */
 
-
+#define _GNU_SOURCE
 #include "php.h"
 
 #include <zend_strtod.h>