ERR: Remove warnings on Borland

Source/CTest/Curl/dict.c

@@ -228,7 +228,7 @@ CURLcode Curl_dict(struct connectdata *conn)
         return result;
     }
   }
-
+  (void)nth;
   return CURLE_OK;
 }
 

Source/CTest/Curl/hostip.c

@@ -549,6 +549,7 @@ static Curl_addrinfo *my_getaddrinfo(struct SessionHandle *data,
    * Stevens' Unix Network Programming 2nd editor, p. 304: 8192 bytes! */
   port=0; /* unused in IPv4 code */
   ret = 0; /* to prevent the compiler warning */
+  (void)ret;
 
   if ( (in=inet_addr(hostname)) != INADDR_NONE ) {
     struct in_addr *addrentry;

Source/CTest/Curl/telnet.c

@@ -867,6 +867,7 @@ static void suboption(struct connectdata *conn)
       printsub(data, '>', &temp[2], len-2);
       break;
   }
+  (void)subchar;
   return;
 }
 

Source/CTest/Curl/url.c

@@ -1337,6 +1337,7 @@ ConnectionKillOne(struct SessionHandle *data)
 
     /* the winner gets the honour of being disconnected */
     result = Curl_disconnect(data->state.connects[connindex]);
+    (void)result;
 
     /* clean the array entry */
     data->state.connects[connindex] = NULL;
@@ -1924,6 +1925,7 @@ static CURLcode CreateConnection(struct SessionHandle *data,
   }
 
   buf = data->state.buffer; /* this is our buffer */
+  (void)buf;
 
   /*
    * So if the URL was A://B/C,

Source/CTest/Curl/version.c

@@ -114,7 +114,7 @@ char *curl_version(void)
   sprintf(ptr, " zlib/%s", zlibVersion());
   ptr += strlen(ptr);
 #endif
-
+  (void)ptr;
   return version;
 }