Fix buffer overflow in progs global string functions

[alexey-lysiuk]

Using v1.06 progs.dat, the following code causes buffer overflow as string value it references is long enough to fill entire line variable

PR_PrintStatement(&pr_statements[5821]);

[sezero]

Thanks. Can you make lastchari static const, instead? E.g. like:

    static char line[512];
+   static const int lastchari = Q_COUNTOF(line) - 2;
    const char  *s;

[sezero]

Thanks, this is in. (Applied a tiny reorganization as a follow-up as b3b4203735d8622719e4d322de8da0d2b6c982c7)

[alexey-lysiuk]

Thanks, this is in. (Applied a tiny reorganization as a follow-up as b3b4203)

Sorry, I missed the fact that new variable was moved to a different line in your code snippet.