Fix Erik's typo.

libc/pwd_grp/__getpwent_r.c

@@ -47,7 +47,7 @@ int __getpwent_r(struct passwd * passwd, char * line_buff, size_t buflen, int pw
 		return ERANGE;
 	}
 
-	if (pw_fd == -1)
+	if (pwd_fd == -1)
 		setpwent();
 
 	/* We use the restart label to handle malformatted lines */