Corrected covery warning on delay_us multiplication

Warning:
sign_extension: Suspicious implicit sign extension: fhss_structure->platform_functions.fhss_resolution_divider
with type uint8_t (8 bits, unsigned) is promoted in delay_us * fhss_structure->platform_functions.fhss_resolution_divider
to type long (32 bits, signed), then sign-extended to type long long (64 bits, signed).
If delay_us * fhss_structure->platform_functions.fhss_resolution_divider is greater than 0x7FFFFFFF, the upper bits
of the result will all be 1.

Author: Mika Leppänen

source/Service_Libs/fhss/fhss_ws.c

@@ -348,7 +348,7 @@ static void fhss_broadcast_handler(const fhss_api_t *fhss_api, uint16_t delay)
     }
 
     if (fhss_structure->ws->is_on_bc_channel == false) {
-        fhss_ws_start_timer(fhss_structure, MS_TO_US(fhss_structure->ws->fhss_configuration.fhss_bc_dwell_interval) - (delay_us * fhss_structure->platform_functions.fhss_resolution_divider), fhss_broadcast_handler);
+        fhss_ws_start_timer(fhss_structure, MS_TO_US(fhss_structure->ws->fhss_configuration.fhss_bc_dwell_interval) - ((int64_t) delay_us * fhss_structure->platform_functions.fhss_resolution_divider), fhss_broadcast_handler);
         fhss_structure->ws->is_on_bc_channel = true;
         next_channel = fhss_structure->ws->bc_channel = fhss_ws_calc_bc_channel(fhss_structure);