Include realloc() in dmmlib.h

include/dmmlib/dmmlib.h

@@ -17,8 +17,9 @@
 
 #ifndef DMMLIB_H
 #define DMMLIB_H
-#include <dmmlib/heap.h>
 #include "dmm_config.h"
+#include <dmmlib/heap.h>
+#include <dmmlib/custom_realloc.h>
 
 void * custom_ahmalloc(allocator_t* allocator, heap_t* heap, size_t size);
 void custom_ahfree(allocator_t *allocator, heap_t* heap, void *ptr);