(WIP) Fix type-aliasing-violation

[michaelortmann]

Found by: michaelortmann
Patch by: michaelortmann
Fixes:

One-line summary:
Fix type-aliasing-violation

Additional description (if needed):
Found with clang 20.1.0rc1 -fsanitize=type

Here a time_t is interpreted as an int:

eggdrop/src/mod/server.mod/server.c

Line 62 in 541e8ac

static time_t server_cycle_wait; /* seconds to wait before

eggdrop/src/tcl.c

Line 204 in 541e8ac

egg_snprintf(s1, sizeof s1, "%d", *(int *) ii->var);

There are more such warnings, hence i flagged this PR WIP.

Test cases demonstrating functionality (if applicable):
No functional change