Fix rallocm() test to support >4KiB pages.
diff --git a/src/jemalloc.c b/src/jemalloc.c
index fd6b890..a161c2e 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -689,7 +689,7 @@
 
 		result = sysconf(_SC_PAGESIZE);
 		assert(result != -1);
-		pagesize = (unsigned)result;
+		pagesize = (size_t)result;
 
 		/*
 		 * We assume that pagesize is a power of 2 when calculating