libsepol: fix reallocarray imports

In f0a5f6e, calls to reallocarray were introduced. Ensure that the
correct header (private.h) is included when necessary.

Fixes: f0a5f6e ("libsepol: use reallocarray wrapper to avoid overflows")
Signed-off-by: Thiébaud Weksteen <tweek@google.com>
Acked-by: James Carter <jwcart2@gmail.com>
Test: Built using Android CI (glibc 2.17)

libsepol/src/kernel_to_common.c

@@ -18,6 +18,7 @@
 #include <sepol/policydb/hashtab.h>
 #include <sepol/policydb/symtab.h>
 
+#include "private.h"
 #include "kernel_to_common.h"
 
 

libsepol/src/util.c

@@ -28,6 +28,8 @@
 #include <sepol/policydb/policydb.h>
 #include <sepol/policydb/util.h>
 
+#include "private.h"
+
 struct val_to_name {
 	unsigned int val;
 	char *name;