globa: Change unsigned int to size_t where it is the size of a byte array or an index/offset into it.
diff --git a/ndn-cpp/c/util/ndn_realloc.h b/ndn-cpp/c/util/ndn_realloc.h
index 5259f70..7aeb6af 100644
--- a/ndn-cpp/c/util/ndn_realloc.h
+++ b/ndn-cpp/c/util/ndn_realloc.h
@@ -21,7 +21,7 @@
  * @param length the length for the new array buffer.
  * @return the new allocated array buffer.
  */
-uint8_t *ndn_realloc(struct ndn_DynamicUInt8Array *self, uint8_t *array, unsigned int length);
+uint8_t *ndn_realloc(struct ndn_DynamicUInt8Array *self, uint8_t *array, size_t length);
 
 #ifdef __cplusplus
 }