minor error

student-distrib/pit.h

@@ -5,3 +5,7 @@
 #define FREQUENCY 			    1193182
 #define CHANNEL_0 				0x40
 #define CMD_REG					0x43
+
+
+pcb_t* get_pcb(uint32_t pid);
+void scheduler(void);

student-distrib/scheduler.h

@@ -4,3 +4,6 @@
 
 pcb_t* get_pcb(uint32_t pid);
 int32_t remap_proc(int32_t pid);
+
+
+extern void scheduler(void);