df.c: Add explicit cast to char * for fsys

From: Sergio L. Pascual <https://github.com/slp/FUZIX>

diff --git a/Applications/util/df.c b/Applications/util/df.c
index f1c42b0..3bb99d0 100644 (file)
--- a/Applications/util/df.c
+++ b/Applications/util/df.c
@@ -45,7 +45,7 @@ int main(int argc, char *argv[])
        }
     } else {
        for (j = 0; j < 8; ++j) {
-           if ((_getfsys(j, &fsys) == 0) && fsys.s_mounted) {
+           if ((_getfsys(j, (char *) &fsys) == 0) && fsys.s_mounted) {
                Total = iflag ? 8 * (fsys.s_isize - 2) : fsys.s_fsize;
                Used  = iflag ? Total - fsys.s_tinode :
                                Total - fsys.s_isize - fsys.s_tfree;