kmalloc: initialize initial page power

kernel/kmalloc.c

@@ -33,11 +33,12 @@ struct kmalloc_region {
 #define KMALLOC_MAX_TRIES 3 //Max number of times the heap can be grown for a single request
 
 
-int curr_page_power = 0;
+unsigned int curr_page_power;
 struct dlist_node kmalloc_free_regions;
 
 void kmalloc_init() {
 	init_list(&kmalloc_free_regions);
+	curr_page_power = 0;
 }
 
 struct kmalloc_region *find_free_region(unsigned int bytes) {