Revert "Fix CI warnings."

This reverts commit 669b9ce.

Author: dok-net

cores/esp8266/core_esp8266_wiring_digital.cpp

@@ -126,10 +126,10 @@ typedef struct {
 	void* functionInfo;
 } ArgStructure;
 
-static interrupt_handler_t interrupt_handlers[16] = {0};
+static interrupt_handler_t interrupt_handlers[16] = {0,};
 static uint32_t interrupt_reg = 0;
 
-void ICACHE_RAM_ATTR interrupt_handler(void *) {
+void ICACHE_RAM_ATTR interrupt_handler(void *arg) {
   uint32_t status = GPIE;
   GPIEC = status;//clear them interrupts
   uint32_t levels = GPI;