Fix debug info data type mismatch  error

Test: mm -j8
Change-Id: I1c524a4d120a658b7a95c4ca4b47ccf1e89739d3
diff --git a/cgpt/cgpt_create.c b/cgpt/cgpt_create.c
index c34cfe3..c3369e4 100644
--- a/cgpt/cgpt_create.c
+++ b/cgpt/cgpt_create.c
@@ -15,7 +15,7 @@
   } else {
     *buf = calloc(1, size);
     if (!*buf) {
-      Error("Cannot allocate %u bytes.\n", size);
+      Error("Cannot allocate %lu bytes.\n", size);
       abort();
     }
   }