Adjusted to take in account that...

With the curl memory tracking feature decoupled from the debug build feature,
CURLDEBUG and DEBUGBUILD preprocessor symbol definitions are used as follows:

CURLDEBUG used for curl debug memory tracking specific code (--enable-curldebug)

DEBUGBUILD used for debug enabled specific code (--enable-debug)

lib/netrc.c

@@ -92,7 +92,7 @@ int Curl_parsenetrc(const char *host,
 
 #define NETRC DOT_CHAR "netrc"
 
-#ifdef CURLDEBUG
+#ifdef DEBUGBUILD
   {
     /* This is a hack to allow testing.
      * If compiled with --enable-debug and CURL_DEBUG_NETRC is defined,
@@ -106,7 +106,7 @@ int Curl_parsenetrc(const char *host,
       netrc_alloc = TRUE;
     }
   }
-#endif /* CURLDEBUG */
+#endif /* DEBUGBUILD */
   if(!netrcfile) {
     home = curl_getenv("HOME"); /* portable environment reader */
     if(home) {