make it compile fine

docs/examples/anyauthput.c

@@ -11,6 +11,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 #include <curl/curl.h>
 
@@ -18,6 +19,10 @@
 #error "upgrade your libcurl to no less than 7.12.3"
 #endif
 
+#ifndef TRUE
+#define TRUE 1
+#endif
+
 /*
  * This example shows a HTTP PUT operation with authentiction using "any"
  * type. It PUTs a file given as a command line argument to the URL also given