CHRS: CP437 2   
   MSGID: 2:240/8002@fidonet 5a68b866   
   PID: MBSE-BBS 1.0.8.4 (Linux-aarch64)   
   TZUTC: 0000   
   TID: MBSE-FIDO 1.0.8.4 (Linux-aarch64)   
      
   Hello, MBSE Developer Team,   
      
   I have found and fixed an error with the 'HelP' window shown in the internal   
   editor, which causes the editor to crash:   
      
   1.) Steps to reproduce:   
       - Enter a message in the internal editor   
   - In the editor, press  and then  to display the help text window   
   - Press a key to close the help text window   
   - Try to continue to edit the message text   
     -> an error message appears, then the BBS disconnects   
        
   2.) Root cause analysis:   
       - The function "void Full_Help(void)" in fsedit.c utilizes several helper   
     functions to draw the help-text window. These helper functions access and   
     manipulate the gobal variables "int Col" and "int Row" causing an overflow   
     of the "Row" variable. This overflow will lead to a Segfault when    
   "Refresh()"   
     function is called before resuming editing of the text.   
        
   3.) Solution:   
       - i've added tow local variables "int hc" and "int hr" to the function    
     "void Full_Help(void)" which are being used to temporary store the original    
     values if "int Col" and "int Row" at the beginning of the function before    
     drawing the help-text window. Once this is drawn, "int Col" and "int Row"    
   are   
     being assigned the original values temporarily stored in "int hc" and    
     "int hr". That way, the call to "Refresh()" after drawing the help-text   
     window will no longer crash and operate as intended.   
        
   Do you want me to create a MR for this fix?   
      
   Kind regards,   
   Niels    
      
       Greetings, Niels Haedecke   
      
   --- MBSE BBS v1.0.8.4 (Linux-aarch64)   
    * Origin: Wintermute BBS - Duesseldorf, Germany (2:240/8002)   
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