LibC: Make sockaddr and sockaddr_in compatible with other systems

sockaddr:
make sa_data is 14 bytes on all systems

sockaddr_in:
add sin_zero

userspace/libraries/LibC/include/netinet/in.h

@@ -87,6 +87,7 @@ struct sockaddr_in
 	sa_family_t		sin_family;	/* AF_INET. */
 	in_port_t		sin_port;	/* Port number. */
 	struct in_addr	sin_addr;	/* IP address. */
+	unsigned char	sin_zero[8];
 };
 
 struct in6_addr

userspace/libraries/LibC/include/sys/socket.h

@@ -25,7 +25,7 @@ __BEGIN_DECLS
 struct sockaddr
 {
 	sa_family_t	sa_family;   /* Address family. */
-	char		sa_data[0];	/* Socket address (variable-length data). */
+	char		sa_data[14]; /* Socket address (variable-length data). */
 };
 
 struct sockaddr_storage

userspace/programs/resolver/main.cpp

@@ -442,6 +442,7 @@ int main(int, char**)
 					.sin_family = AF_INET,
 					.sin_port = 0,
 					.sin_addr = { .s_addr = resolved->raw },
+					.sin_zero = {},
 				};
 
 				if (send(client.socket, &addr, sizeof(addr), 0) == -1)
@@ -489,6 +490,7 @@ int main(int, char**)
 					.sin_family = AF_INET,
 					.sin_port = 0,
 					.sin_addr = { .s_addr = result->raw },
+					.sin_zero = {},
 				};
 
 				if (send(client.socket, &addr, sizeof(addr), 0) == -1)