Add missing includes.

Change-Id: I0737456e0221ebe9cc854d65c95a7d37d0869d56
diff --git a/applypatch/bspatch.c b/applypatch/bspatch.c
index b34ec2a..b57760e 100644
--- a/applypatch/bspatch.c
+++ b/applypatch/bspatch.c
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <sys/stat.h>
 #include <errno.h>
+#include <malloc.h>
 #include <unistd.h>
 #include <string.h>