Correctly NULL-terminate h_addr_list

CHANGELOG

@@ -215,6 +215,9 @@ HISTORY
 
   ++ Bugfixes:
 
+  2010-05-17: Simon Goldschmidt
+  * netdb.c: Correctly NULL-terminate h_addr_list
+
   2010-05-16: Simon Goldschmidt
   * def.h/.c: changed the semantics of LWIP_PREFIX_BYTEORDER_FUNCS to prevent
     "symbol already defined" i.e. when linking to winsock

src/api/netdb.c

@@ -91,7 +91,7 @@ lwip_gethostbyname(const char *name)
   HOSTENT_STORAGE struct hostent s_hostent;
   HOSTENT_STORAGE char *s_aliases;
   HOSTENT_STORAGE ip_addr_t s_hostent_addr;
-  HOSTENT_STORAGE ip_addr_t *s_phostent_addr;
+  HOSTENT_STORAGE ip_addr_t *s_phostent_addr[2];
 
   /* query host IP address */
   err = netconn_gethostbyname(name, &addr);
@@ -103,7 +103,8 @@ lwip_gethostbyname(const char *name)
 
   /* fill hostent */
   s_hostent_addr = addr;
-  s_phostent_addr = &s_hostent_addr;
+  s_phostent_addr[0] = &s_hostent_addr;
+  s_phostent_addr[1] = NULL;
   s_hostent.h_name = (char*)name;
   s_hostent.h_aliases = &s_aliases;
   s_hostent.h_addrtype = AF_INET;