fixed random dice rolling bug (uneven distribution of 1s)

dicepwgen.1

@@ -182,13 +182,6 @@ The program only uses words which contain 7bit \s-1ASCII\s0 letters
 <https://xkcd.com/936/>.
 .SH "BUGS"
 .IX Header "BUGS"
-.IP "\(bu" 4
-Program rolled dices are using a pseudo random device, thanks
-to some yet unknown reason the digits of dice rolls are unevenly
-distributed, in fact there are 20% as much 1s as other digits.
-.Sp
-Use the option b<\-t> with physical dices to mitigate this.
-.PP
 In order to report a bug, unexpected behavior, feature requests
 or to submit a patch, please open an issue on github:
 <https://github.com/TLINDEN/diceware/issues>.

dicepwgen.pod

@@ -46,18 +46,6 @@ L<https://xkcd.com/936/>.
 
 =head1 BUGS
 
-=over
-
-=item *
-
-Program rolled dices are using a pseudo random device, thanks
-to some yet unknown reason the digits of dice rolls are unevenly
-distributed, in fact there are 20% as much 1s as other digits.
-
-Use the option b<-t> with physical dices to mitigate this.
-
-=back
-
 In order to report a bug, unexpected behavior, feature requests
 or to submit a patch, please open an issue on github:
 L<https://github.com/TLINDEN/diceware/issues>.

tossing.c

@@ -89,11 +89,12 @@ unsigned char *toss(int count, int dicenum) {
     for(i=0; i<RLEN; i++) {
       onedice = rand[i];
       onedice &= 7; /* only use the last 3 bits, 0-7 */
-      onedice %= 6; /* 6 is the max */
       if(onedice >= 1 && onedice <= 6) {
 	tosses[pos] = onedice;
 	pos++;
       }
+      else
+	continue;
       if(pos == count)
 	break;
     }