Fix descriptive comment for nopen()

src/sbbs3/nopen.c

@@ -39,9 +39,10 @@
 #include "crc32.h"
 
 /****************************************************************************/
-/* Network open function. Opens all files DENYALL and retries LOOP_NOPEN    */
-/* number of times if the attempted file is already open or denying access  */
-/* for some other reason.	All files are opened in BINARY mode.			*/
+/* Network open function. Opens all files DENYALL or DENYWRITE depending on */
+/* access, and retries LOOP_NOPEN number of times if the attempted file is	*/
+/* already open or denying access  for some other reason. All files are 	*/
+/* opened in BINARY mode.													*/
 /****************************************************************************/
 int nopen(const char* str, int access)
 {