Fix old autoconf-generated code for compatibility with C99: undeclared
functions can now longer be called.
Fixed in <https://github.com/ingwarsw/tinyfugue> by moving to current
autoconf.
diff --git a/configure b/configure
index ea48217c90151d8f..9d4a80250acf575a 100755
--- a/configure
+++ b/configure
@@ -3060,8 +3060,8 @@ main ()
for (i = 0; i < 256; i++)
if (XOR (islower (i), ISLOWER (i))
|| toupper (i) != TOUPPER (i))
- exit(2);
- exit (0);
+ return 2;
+ return 0;
}
_ACEOF
rm -f conftest$ac_exeext